NEED HELP ASAP THANK YOU!!!!!!!!!!!

NEED HELP ASAP THANK YOU!!!!!!!!!!!

Answers

Answer 1

Answer:

4. So Adrian can buy 3 more cd's at the sale price.

5. 36 km every week.

Step-by-step explanation:

Adrian has enough money to buy 3 cd's at $16 each. If the cd's are on a sale and are sold at a discount price of $12, he can buy more cd's because the price is cheaper. To find out how many more cd's he can buy, you can subtract the original cost of the cd's from the sale price of the cd's and then divide that amount by the sale price of the cd's.

3 cd's x $16 = $48

$48 - $12 = $36

$36 / $12 = 3

Rehman and his father jog to the park 3 km away from their house and back every evening except Sundays, so they jog a total of 6 km per day. To find out how many kilometres they jog per week, you need to multiply the distance they jog per day by the number of days they jog in a week (7 days - 1 Sunday).

6 km/day x 6 days/week = 36 km/week

So Rehman and his father jog 36 km every week.


Related Questions

write an equation of a line that passes through (1,0) and is parallel to 2x+y=-4

Answers

The equation of the line that passes through (1, 0) and is parallel to the line 2x + y = -4 is: y = -2x + 2.

How to Write the Equation of Parallel Lines?

The equation of a line, in slope-intercept form is y = mx + b, if two lines are parallel to each other, then the value of the slope, m, would be the same for both of them.

Given the equation, 2x + y = -4, rewrite the equation in slope-intercept form to determine the slope (m):

2x + y = -4

y = -2x - 4

The slope (m) is -2.

This means the line that passes through (1, 0) will also have a slope of -2. Substitute m = -2 and (x, y) = (1, 0) into y = mx + b, to find the y-intercept (b) of the line:

0 = -2(1) + b

0 = -2 + b

2 = b

b = 2

To write the equation of the parallel line, substitute m = -2 and b = 2 into y = mx + b:

y = -2x + 2.

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Danny takes a rectangular piece of fabric and cuts from one corner to the opposite corner. If
the piece of fabric is 9 centimeters long and 12 centimeters wide, how long is the diagonal
cut that Danny made?

Answers

Answer: To find the length of the diagonal cut, we can use the Pythagorean theorem.

The diagonal cut is the hypotenuse of a right triangle, with legs of length 9 and 12.

The Pythagorean theorem states that the square of the hypotenuse is equal to the sum of the squares of the legs. So, the length of the diagonal cut is the square root of (9^2 + 12^2)

So, the length of the diagonal cut is √(9^2 + 12^2) = √(81 + 144) = √225 = 15cm

Therefore, the diagonal cut that Danny made is 15 centimeters long.

Step-by-step explanation:

fully factor (x^2 + 4)(x -3)

Answers

Answer: x³ - 3x² + 4x - 12

Step-by-step explanation:

Using FOIL:

x³ - 3x² + 4x - 12

Answer:

x=1

Step-by-step explanation:

(x^2+4)(x-3)

"x^2=x*x=x"

(x+4)(x-3)

x+1

x/x/

x=1

for each pair expalin why they are equivelent 5:6 15:18

Answers

The two ratios are equivalent because if we multiply both of the numbers by 3, we will get the other ratio.

Why are the two ratios equivalent?

Here we want to explain why the two ratios:

5:6 and 15:18

Are equivalent, where equivalent means that these two ratios mean the same thing.

Now, if we take any ratio

a:b

and we multiply both numbers by the same real number k (except for zero) we will get the equivalent ratio.

k*a: k*b

Now, let's look to our ratios:

5:6

If we multiply these 2 numbers by 3, we will get.

3*5: 3:6

15: 18

So yes, these are equivalent.

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Solve each equation. 2 1/3(2x-3)=2 1/3

Answers

Answer: x = 2

Step-by-step explanation:

Multiply each term between the parentheses by 2 1/3.

[tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{2\frac{1}{3}(2x-3)=2\frac{1}{3} \iff \ 2\frac{1}{3}\times2x+2\frac{1}{3}\times(-3)=2\frac{1}{3} } \end{gathered}$} }[/tex]

We calculate the expression of the multiplication.

[tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{2\frac{1}{3}\times2x+2\frac{1}{3}\times(-3)=2\frac{1}{3} \iff \ \frac{14x}{3}+2\frac{1}{3}\times(-3)=2\frac{1}{3} } \end{gathered}$} }[/tex]

We calculate the multiplication and division of rational numbers.

[tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{\frac{14x}{3}+2\frac{1}{3}\times(-3)=2\frac{1}{3} \iff \frac{14x}{3}-7=2\frac{1}{3} } \end{gathered}$} }[/tex]

We convert the mixed fraction to improper.

[tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{\frac{14x}{3}-7=2\frac{1}{3} \iff \dfrac{14x}{3}-7=\dfrac{7}{3} } \end{gathered}$} }[/tex]

We eliminate the fractions by multiplying by the least common multiple of the denominators of both sides.

[tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{\dfrac{14x}{3}-7=\dfrac{7}{3} \iff \ 14x-21=7} \end{gathered}$} }[/tex]

We move the constant to the right side and change the direction of the sign.

[tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{14x-21=7 \iff 14x=7+21=28, and \ remains \ 14x=28} \end{gathered}$} }[/tex]

[tex]\boxed{\large\displaystyle\text{$\begin{gathered}\sf \bf{14x=28 \iff \ we \ divided \ x=\frac{28}{14}=x; \Rightarrow x=2. } \end{gathered}$} }[/tex]

- Grace is trying to read as many books
over the summer as she can. Grace
has already read 15 books. She plans
to read 2 additional books per week.
Define a variable for the number of
weeks she reads additional books. Use
the variable to write an expression
for the total number of books Grace
reads over the summer.

Answers

Step-by-step explanation:

let the number of weeks be w

the total number of books Grace reads will always be 15 + something because we start with 15 and cannot unread a book

for each week, she reads 2 books. this can be represented as 2 * w

books Grace already read + books Grace reads each week = total books

15 + 2 * w = total books

2+2=4 right…………………………….

Answers

Answer: yes, it is

Step-by-step explanation:

Answer:4

Step-by-step explanation:

A small city has a population of 34000 in 1994. The population growth after 1994 is modeled by the following function where is the number of years after 1994.

P(t)=34000e 0.04t
During what year will the population reach 68000?

Answers

[tex]P(t)=3400e^{0.04t}\implies 68000=3400e^{0.04t}\implies \cfrac{68000}{3400}=e^{0.04t} \\\\\\ 20=e^{0.04t}\implies \log_e(20)=\log_e(e^{0.04t})\implies \log_e(20)=0.04t \\\\\\ \ln(20)=0.04t\implies \cfrac{\ln(20)}{0.04}=t\implies 74.89\approx t[/tex]

that's about 74 years and 325 days more or less.

based on the exponential equation which is really a continuously compounding equation with an initial value of 34000 in 1994, so 74 years later that'd be 1994 + 74 = 2068, then we add the 325 days to that, well, that's pretty much in November in 2069.

Date Page A merchant bought a quintal of potatoes for Rs 4000. He sold all potatoes at Rs 390 per kg.
Find his profit or loss.​

Answers

Answer:  The merchant made a profit of Rs 35,000 by selling the potatoes.

Step-by-step explanation:

To find the profit or loss of the merchant, we first need to calculate the revenue he earned from selling the potatoes.

A quintal is a unit of weight equivalent to 100 kg, therefore, the merchant bought 100 kg of potatoes.

If the merchant sold all potatoes at Rs 390 per kg, the revenue would be 100 * 390 = Rs 39,000.

To find the profit or loss, we need to compare the revenue to the cost of the potatoes.

If the merchant bought a quintal of potatoes for Rs 4000, the cost is Rs 4000.

To calculate the profit or loss, we can use the following formula:

Profit or loss = Revenue - Cost

Using this formula, we can calculate the profit or loss as:

Profit or loss = 39,000 - 4,000 = Rs 35,000

So, the merchant made a profit of Rs 35,000 by selling the potatoes.

It is important to note that when calculating the profit or loss, we need to make sure that the units of measure for cost and revenue are the same.

What is the slope of the line that passes through the points (3,8) and (-2,13)?

Answers

[tex](\stackrel{x_1}{3}~,~\stackrel{y_1}{8})\qquad (\stackrel{x_2}{-2}~,~\stackrel{y_2}{13}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{\textit{\large rise}} {\stackrel{y_2}{13}-\stackrel{y1}{8}}}{\underset{\textit{\large run}} {\underset{x_2}{-2}-\underset{x_1}{3}}} \implies \cfrac{ 5 }{ -5 } \implies - 1[/tex]

Answer:

[tex]\boxed{\bf Slope(m):-1}[/tex]

Step-by-step explanation:

We can use the slope formula to find the slope of a line given the coordinates of two points on the line:- (3,8) and (-2,13).

The coordinates of the first point represent x_1 and y_1. The coordinates of the second points are x_2, y_2.

[tex]\sf \mathrm{Slope}=\cfrac{y_2-y_1}{x_2-x_1}[/tex]

[tex]\bf \left(x_1,\:y_1\right):\left(3,\:8\right)[/tex]

[tex]\bf \left(x_2,\:y_2\right):\left(-2,\:13\right)[/tex]

[tex]\bf m=\cfrac{13-8}{-2-3}[/tex]

[tex]\bf m=-\cfrac{5}{5}[/tex]

[tex]\bf m=-1[/tex]

Therefore, the slope is -1.

__________________

Hope this helps!

Have a great day!

please answer the following four questions.

i have left a table of the hybrid car if that helps at all.

i need help with this asap so if anyone can get back to me sooner than later i would really appreacite it.

Answers

The analysis of the distance to the Grand Canyon, and the distance traveled on an amount of gas are as follows;

1 a. The distance from the middle school to the Grand Canyon = 80 miles

2 a. The graph showing the correlation between the distance traveled to the number of gallons used, created with MS Excel is attached

b. The table of values based on the data used to create the graph, presented in a tabular form using MS Word is attached

c. The equation is; d = 10·g

d. The advantages are;

The graphical presentation is a pictorial representation of the distance

The table enables further analysis

The equation can be used to predict the distance the Hybrid can travel on an amount of gas

What is a correlation between variables?

A correlation is an indication or measure of the degree of relationship between variables.

1 a. The data for the Camper and the SUV that both use only gas, and the Hybrid car are as follows;

                                              [tex]{}[/tex]   Camper                    SUV    Hybrid Car

Average Miles per Gallon [tex]{}[/tex]       4                                8           10

Gallons of gas consumed [tex]{}[/tex]       20                             10           8

Distance traveled = Number of gallons used × Miles traveled per gallon

The distance between the middle school and the Grand Canyon, using the data for the Camper, is therefore;

d = 20 gallons × 4 miles/gallon = 80 miles

The distance is 80 miles from the middle school to the Grand Canyon

2. Amount of gas in gallons = g

Distance car drives in miles = d

The model used = The Hybrid car

Miles traveled per gallon = 10 miles/gallon

Therefore, d/g for the Hybrid car = 10 miles/gallon

d = 10·g

a. Please find attached the graph of the driven distance to the amount of gas used, created with MS Excel

b. The table based on the distance covered using different amount of gas can be created using the data used for creating the graph as follows;

Amount of gas; 0     1  [tex]{}[/tex]    2     3      4        5      6      7     8      9     10        11

Distance;           0     10   20   30    40     50    60   70    80   90   100      110

c. The equation that represents the distance traveled in miles, d, with the Hybrid when a specified amount of gasoline is used, g, is presented as follows;

d = 10·g

d. The advantage of each representation are as follows;

The advantage of the graphical presentation is that the fuel consumption can be visualised to help better plan the trip

The advantage of presenting the data as a table allows the exact value of the distance traveled using an indicated amount of fuel, such that the cost of the journey can be more easily calculated

The presentation of the relationship as an equation, allows for the relationship to be treated as a continuous function and to predict the amount of gas to be used or the distance the Hybrid car can drive

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Can someone help me with this math problem? The answer is 7/2, but does anyone know how to get that answer?

Answers

The value of 3x₁ + x₂ is 7/2

How to find the value of 3x₁ + x₂?

A quadratic equation is an equation of the form ax² + bx + c = 0, where x is the variable and a, b, and c are constants.

5/x - 2/x² = 2

The LCM of x and x² is x². So we have:

(5x - 2)/x² = 2

Cross multiply:

5x - 2 = 2x²

2x² - 5x + 2 = 0

Factorize:

(2x - 1)(x - 2) = 0

2x - 1 = 0 or x - 2 = 0

2x  = 1 or x = 2

x  = 1/2 or x = 2

Thus, x₁ = 1/2 and x₂ = 2

Therefore, the value of 3x₁ + x₂ will be:

3x₁ + x₂ = 3×(1/2) + 2 = 3/2 + 2 = 7/2

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The stopping distance , D, of a car after the brakes are applied varies directly as the square of the speed , S, of the car. If a car traveling at a speed of 36 miles per hour can stop in 53 feet, what is the stopping distance of a car traveling at 70 miles per hour? Round your answer to the nearest foot.

Answers

Answer: There is no way 200 is the answer. it should be 103.055

Step-by-step explanation: See, 36 miles can stop in 53 feet. We want to know how many feet are there when 70 miles fast. We can write  that as 36/53 = 70/x. 36 corresponds to 70 and 53 corresponds to x. Do it and you get 103.055

The slope of a line can be used when building a ramp. Gordon is helping to build a wheelchair ramp for a neighbor's house. For every 12 inches of horizontal distance, the height of the ramp increases 1 inch.

Question 1
Part A

The height of the ramp when it connects to the house is 9 inches. What is the length of the ramp in yards?

Part B

Explain how you determined the length.

Enter the correct answers in the boxes.

The ramp is 9 inches tall, so the length of the ramp is 9×
=
inches, which is equal to
feet, and that is equal to
yards.

Answers

Answer:

Part A:

To find the length of the ramp in yards, we need to first determine the horizontal distance covered by the ramp. The slope of the ramp is 1/12, meaning that for every 12 inches of horizontal distance, the height of the ramp increases by 1 inch. Since the height of the ramp when it connects to the house is 9 inches, we can use this information to determine the horizontal distance covered by the ramp.

9 inches / (1/12) = 108 inches

To convert inches to yards, we divide by 36, so

108 inches / 36 inches/yard = 3 yards

Part B:

To determine the length of the ramp, I used the information provided about the slope of the ramp and the height of the ramp when it connects to the house. I used the slope of the ramp (1/12) to calculate the horizontal distance covered by the ramp. Then I converted the horizontal distance from inches to yards by dividing by 36. Finally, I obtained 3 yards as the length of the ramp.

Answer:

Part A = 3 yards

Part B = 9 x 12 = 108 inches = 9 feet = 3 yards

Step-by-step explanation:

Part A

1 inch height - 12 inches length

9 inches height - 9 x 12 = 108 inches length

36 inches = 1 yard

108 inches = 108/36 = 3 yards

Part B

Shown above

The ramp is 9 inches tall, so the length of the ramp is 9 x 12 = 108 inches.

1 feet = 12 inches

108 inches = 108/12 feet = 9 feet

1 yard = 3 feet

9 feet = 3 yards.

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Find general solution. Show steps of derivation. Check your answer by substitution.
y´=sec^2(y)​

Answers

So on solving the provided question we cans ay that trigonometry y =sec^2(y); y = 1/[tex]\sqrt{2}[/tex]

what is trigonometry?

The area of mathematics known as trigonometry examines the correlation between triangle side lengths and angles. The area first appeared in the Hellenistic era, around the third century BC. from the use of geometry in astronomical study. The area of mathematics known as exact methods deals with specific trigonometric functions and how they might be used in calculations. There are six popular trigonometric functions in trigonometry. Sine, cosine, tangent, cotangent, secant, and cosecant are their respective names and acronyms (csc). Studying the characteristics of triangles, particularly right triangles, is called trigonometry. The study of geometry, however, is the characteristics of all geometric figures.

y´=sec^2(y)

here, y = 90

y = sec^2(90)

y = 1/[tex]\sqrt{2}[/tex]

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If P(E)= 0.9 and P(F) = 0.8, show that P(EF) >0.7. In general, show that
P(EF) > P(E) + P(F) - 1

Answers

Answer:

P(EF) > 0.72 and in general, P(EF) > P(E) + P(F) - 1

Step-by-step explanation:

We know that P(EF) = P(E and F) = P(E|F) * P(F) = P(F|E) * P(E) (by the definition of conditional probability).

For the specific case given, P(E)= 0.9 and P(F) = 0.8,

P(EF) = P(E|F) * P(F) = P(F|E) * P(E) > P(E) * P(F) = 0.72

In general,

P(EF) = P(E|F) * P(F) = P(F|E) * P(E) > min(P(E|F) * P(F), P(F|E) * P(E) ) = P(E) * P(F)

P(EF) > P(E) * P(F) = P(E) + P(F) - 1

This is because P(E|F) and P(F|E) are always less or equal to 1.

Which of the following show an equation and it’s solution?

Answers

The ones which are equation are

[tex]\frac{3}{4}l = -9\\ 4m + 2m = 72[/tex]

What is an equation ?

The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions. For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign.

A mathematical statement that has a "equal to" symbol between two expressions with equal values is called an equation. as in 3x + 5 Equals 15, for instance. Equations come in a variety of forms, including linear, quadratic, cubic, and others. In this tutorial, let's study more about math equations.

here

-3 = d/-8

or, d = 24 (different from answer)

14 = 25 - k

or, k = 11 (different from answer)

j + 1 = j/3

or, 3j + 3 = j

or, j = -3/2 (different from answer)

3/4 l = -9

or, l = -12 ( same as answer)

-15 = n + 8

or, n = -23 (different from answer)

4m + 2m = 72

or, m = 12 (same as answer)

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4. The thickness of a textbook is b mm. Write the expression for each of the following:

The thickness of 5 stacked textbooks?

The thickness of each page, if the pages are numbered to 225?

Answers

When the thickness of a textbook is b mm the expressions for:

thickness of 5 stacked textbooks = 5b mm

thickness of each page, if the pages are numbered to 225 = b / 225

How to write the expressions for each condition

The thickness for each of the condition is written as follows

For the thickness of 5 stacked textbooks

= b + b + b + b + b

= 5b

For thickness of each page, if the pages are numbered to 225

In this case division is used to ascertain the thickness of each page in the book. this is done by dividing the total thickness by the number of pages in the book

= b / 225

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When given a set of cards laying face down that spell P, E, R, C, E, N, T, S, determine the probability of randomly drawing a vowel.

A. two eighths
B. six eighths
C. two sevenths
D. six sevenths

Answers

Probability is a metric used to express the possibility or chance that a particular event will occur. Two eighths of a vowel will be drawn at random. Option A is correct.

What is probability?

A probability is a numerical representation of the likelihood or chance that a specific event will take place. Both proportions ranging from 0 to 1 and percentages ranging from 0% to 100% can be used to describe probabilities.

The formula for calculating probability is expressed as:

Probability = expected/total outcome

If the given a set of cards laying face down that spell P, E, R, C, E, N, T, S, then the total outcome is:

n(S) =8

If a vowel is selected randomly, hence the expected outcome is;

E = {E, E}

n(E) = 2

P(vowel) = 2/8

Hence the probability of randomly drawing a vowel is two eighths

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Answer: A: 2/8 (Two Eighths)

Step-by-step explanation:

find the value of x
transversals​

Answers

Answer:

x = 9

Step-by-step explanation:

[tex] - 1 + 14x = 12x + 17 \\ 2x = 18 \\ x = 9[/tex]

if the line passing through the points (a,2) and (4,9) is parallel to the line passing through the points (3,11) and (a+1,3) what is the value of a?​

Answers

Answer:

a = 18

Step-by-step explanation:

The slopes of parallel lines are equal as

[tex]m_{2}=m_{1}[/tex]

We know that the slope formula is

[tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex], where y2, x2, y1, and y2 are any two points.

Thus, since the slopes are equal, we can use the slope formula to find the slopes of both lines and set them equal to each other to find a:

[tex]\frac{9-2}{4-a}=\frac{3-11}{(a+1)-3} \\\\\frac{7}{4-a}=\frac{-8}{a-2} \\\\7(a-2)=-8(4-a)\\7a-14=-32+8a\\7a=-18+8a\\-a=-18\\a=18[/tex]

If we plug in a for any of the two lines, we see that the slope is -1/2

Line 1 w/ (a, 2) & (4, 9):

[tex]\frac{9-2}{4-18}\\ \frac{7}{-14}\\ \frac{-1}{2}[/tex]

Line 2 w/ (3, 11) & (a+1, 3):

[tex]\frac{3-11}{18+1-3}\\ \frac{-8}{19-3}\\ \frac{-8}{16}\\ \frac{-1}{2}[/tex]

Select the correct answer. What is the equation of the directrix of the parabola given by the equation (y − 3)2 = 8(x − 5)? A. y = 3 B. x = 3 C. x = 5 D. y = -5

Answers

Answer:

Choice B: x = 3

Step-by-step explanation:

The standard equation of a parabola is
[tex]4p\left(x-h\right)=\left(y-k\right)^2[/tex]

where

(h, k) is the vertex and |p| is the focal length

The given equation is
[tex](y - 3)^2 = 8(x - 5)[/tex]

Convert this to standard form and compare with general equation

Switch the sides of the equation
[tex]8(x - 5) = (y - 3)^2[/tex][tex]8 = 2 \cdot 4[/tex]
[tex]\rightarrow 4 \cdot 2 (x - 5) = (y - 3)^2\\[/tex]Compare:
[tex]4 \cdot 2 (x - 5) = (y - 3)^2\\4 \cdot p(x -h) = (y - k)^2[/tex]This gives us
[tex]\mathrm{p = 2, vertex (h, k) = (5, 3)}[/tex]
This parabola is symmetric about the x-axis and the directrix is a line parallel to the y-axis at distance -p from the x-coordinate of the vertex
[tex]x = 5-p\\\\x = 5 - 2\\\\x = 3\\\\[/tex]

Answer: Choice B: x = 3

Leah walks to soccer practice on Saturday. She leaves her home and walks 6 blocks north. Leah then turns east and walks 4 more blocks to the soccer field. How far is the soccer field from leah’s home ? Round your answer to the nearest tenth.

Answers

Answer: The soccer field is about 8.6 blocks away from Leah's home.

Step-by-step explanation:

The soccer field is about 8.6 blocks away from Leah's home.

Leah walks 6 blocks north and 4 blocks east. To find the total distance she walked, we can use the Pythagorean theorem. The theorem states that in a right-angled triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides.

The distance is the square root of (6 blocks)^2 + (4 blocks)^2 = 36 + 16 = 52 then square root of 52 = 7.21

The distance of the soccer field from Leah’s home is 7.21 blocks, but it can be rounded to nearest tenth which is 8.6

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Answers

Answer:

2nd option

Step-by-step explanation:

[4    -7] * [a    b] *  = [1    0]

[-1    2]    [c    d]       [0    1]

4 * a + (-7) * c = 1

4 * b + (-7) * d = 0

-1 * a + 2 * c = 0

-1 * b + 2 * d = 1

4a - 7c = 1  ==> equation 1

4b - 7d = 0  ==> equation 2

-a + 2c = 0  ==> equation 3

-b + 2d = 1  ==> equation 4

(-b + 2d = 1) * 4  ==> make -b into -4b

   -4b + 8d = 4

+   (4b - 7d = 0)

-4b+4b + 8d-7d = 4+0  ==> add equations 2 and 4 to cancel the variable b

8d-7d = 4 ==> -4b+4b=0 and adding anything by 0 will result in itself: 0+3=3

d = 4

-b + 2d = 1

-b + 2(4) = 1  ==> substitute 4 for d

-b + 8 = 1   ==> simplify

-b = -7  ==> subtract 8 on both sides

b = 7  ==> simplify


Since we got the values of b and d, the matrix now looks like this:

[4    -7] * [a    7] *  = [1    0]

[-1    2]    [c    4]       [0    1]

Now solve for a and c using equations 1 and 3:

4a - 7c = 1  ==> equation 1

-a + 2c = 0  ==> equation 3

(-a + 2c = 0) * 4  ==> make -a into -4a

   -4a + 8c = 0

+   (4a - 7c = 1)

-4a+4a + 8c-7c = 0+1  ==> add equations 1 and 3 to cancel the variable b

8c-7c = 1 ==> -4a+4a=0 and adding anything by 0 will result in itself: 0+3=3

c = 1

-a + 2c = 0

-a + 2(1) = 0  ==> substitute 1 for c

-a + 2 = 0   ==> simplify

-a = -2  ==> subtract 2 on both sides

a = 2  ==> simplify

Since we got the values of a and c, the matrix now looks like this:

[4    -7] * [2    7] *  = [1    0]

[-1    2]    [1    4]       [0    1]

Hence, the answer is the 2nd option.

There is a 60% chance for snow over the next three days. Find the probability that it snows all three days

Answers

Answer:

21.6%

Step-by-step explanation:

Each day is independent, so the probability of snow all three days is:

(0.60)³ = 0.216

There is a 21.6% chance that it snows all three days.

I will give brainliest, if you get this correct

Depend on the following data


30 25 23 41 39

27 41 24 32

Find

A. The arithmetic mean, median, mode and range.

B. The upper and lower quartile, 7 and 50 .

C. Variance and coefficient of variation.

D. Pearson coefficient of skewness and kurtosis ​

Answers

Answer:

A.

Arithmetic mean: The sum of the data divided by the number of data points. (For the first set of data: (30+25+23+41+39)/5 = 31.4)

Median: The middle value when the data is arranged in order. (For the first set of data: 30, 23, 25, 39, 41 => 25)

Mode: The value that appears most frequently in the data. (For the first set of data: No value appears more than once, so there is no mode.)

Range: The difference between the highest and lowest values in the data. (For the first set of data: 41-23 = 18)

B.

To find the upper and lower quartile, you need to first arrange the data in order and then divide it into four equal parts.

Lower quartile (Q1) is the median of the lower half of the data.

Upper quartile (Q3) is the median of the upper half of the data.

For the first set of data: Q1 = (23+25)/2 = 24, Q3 = (39+41)/2 = 40

7th and 50th Percentile:

To find 7th percentile, pick 7th item from ordered data set and if not possible then take the average of 6th and 8th items.

To find 50th percentile, pick the median of the data set.

For the first set of data: 7th percentile = 25, 50th percentile = 25

C.

Variance: A measure of the spread of the data. It is calculated by taking the average of the squared differences from the mean.

Coefficient of variation (CV) : A normalized measure of the spread of the data. It is the ratio of the standard deviation to the mean.

D.

Pearson coefficient of skewness: A measure of the asymmetry of the data about the mean. A positive skewness indicates that the tail on the right side of the probability density function is longer or fatter than the left side. Conversely, a negative skewness indicates that the tail on the left side is longer or fatter than the right side.

Kurtosis: A measure of the "peakedness" of the data. A high kurtosis means that the data has heavy tails (outliers) or a distinct peak near the mean, whereas a low kurtosis means that the data has light tails (no outliers) or a flat peak near the mean.

Pls help. I think it's only one answer, but I need help just to make sure two more of the answers are not part of it, since the question says to choose all possible answers. Pls help quickly, I'll mark you Brainliest if it is correct.

Answers

Answer:

-5 and -3

Step-by-step explanation:

-2x + 1 > 6

[tex]-2(-\frac{5}{2}) + 1 > 6\\6 > 6[/tex]

Not an answer

-2(-5) + 1 > 6

11 > 6

An answer

-2(-2) + 1 > 6

5 > 6

Not an answer

[tex]-2(-\frac{3}{2}) + 1 > 6\\4 > 6[/tex]

Not an answer

-2(0) + 1 > 6

1 > 6

Not an answer

-2(-3) + 1 > 6

7 > 6

An answer

What is the terminal point of the vector a=⟨4,3⟩ based at P=(5,2)?

Answers

Answer:

Step-by-step explanation:

The terminal point of the vector a=⟨4,3⟩ based at P=(5,2) is the point (9,5). This can be calculated by adding the components of the vector to the corresponding components of the base point:

Terminal point = (x,y) = (Px + ax, Py + ay)

      = (5 + 4, 2 + 3)

      = (9,5)

Answer:

Step-by-step explanation:
✔️For determining terminal point of vector a=(4,3)  whose base is at the point P=(5,2).

✔️ Add to point P and that

✔️Point that the vector is pointing at to find the terminal point....

➖So we can say That

✔️Since the tail of the vector a=(4,1) a=(4,1) is a point P(2,3) then the tip of the vector, the terminal point woll be :-

(5,2)+(4,3)=(9,6)

your welcome !

Consider parallelogram QRST below.
Use the information given in the figure to find mLR, mLRQS, and x.
R
Q
4x
8
36°
83°
S
T

Answers

The value of [tex]m \angle R Q S[/tex] is 40.

What is parallelogram?A parallelogram is a straightforward quadrilateral with two sets of parallel sides in Euclidean geometry. A parallelogram's facing or opposing sides are of equal length, and its opposing angles are of similar size. Parallelograms come in 4 different varieties, including 3 unique varieties. The four varieties are rhombuses, parallelograms, squares, and rectangles. A quadrilateral with two sets of parallel sides is referred to as a parallelogram. The sides of these figurines are parallel to one another and the same hue. a form having four equally long sides.

The opposite angles of a parallelogram are equal, therefore:

[tex]m \angle R=m \angle T \\[/tex]

so

[tex]m \angle R=75[/tex]

Opposite sides of a parallelogram are parallel and equal so:

[tex]Q T & =R S \\[/tex]

[tex]4 x & =12 \\[/tex]

[tex]x & =\frac{12}{4} \\[/tex]

[tex]x & =3[/tex]

[tex]$$$\angle \mathrm{TSQ}$[/tex] and [tex]$\angle \mathrm{RQS}$[/tex] are alternate interior angles, therefore:

[tex]m \angle R Q S=m \angle T S Q \\[/tex]

[tex]80: \\[/tex]

[tex]m \angle R Q S=40[/tex]

The complete question is,
Consider parallelogram QRST below. Use the information given in the figure to find m ZR, x, and m ZROS.

To learn more about parallelogram refer to:

https://brainly.com/question/970600

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riley needs to make punch for a party. One batch of punch has the ingredients shown.
cranberry juice 4 cups, lemon lime soda 1 cup, orange juice 2 cups, pineapple juice 2 cups. Write and interpret a ration that compares the cups of orange juice to the total cups in one batch of punch. Then find the cups of orange juice needed to make enough punch to fill a punch bowl that holds 27 cups

Answers

If riley needs to make punch for a party. One batch of punch has the ingredients shown. The cups of orange juice needed to make enough punch to fill a punch bowl that holds 27 cups is 6 cups.

How to find the cups of orange juice?

Total cup of juice for one batch:

Total cup of juice for one batch = 4+ 1 +2 +2

Total cup of juice for one batch = 9

Since 2 cup of the 9 cups are orange juice so 2/9 of each batch will be orange and since the bowl can hold 27 cups now let find the cups of orange juice.

Cups of orange juice = 2/9 ×27

Cups of orange juice =6 cups

Therefore we can conclude that the cups of orange juice is 6 cups.

Learn more about cups of orange juice here:https://brainly.com/question/16454061

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