Solve for x
(B) and (c) please ​

Answer:

how if there are no numbers or anything to find

Step-by-step explanation:

Option (a) is the correct answer i.e. the graph that shows a line that passes through negative 5 comma 0 and 0 comma 2.5, there is a second line that passes through 0 comma 10 and 5 comma 0 and the lines intersect at 3 comma 4, represents the system of given equations.

What is a system of equations?

A group of equations comprising one or more variables is known as a system of equations. The variable mappings that satisfy all component equations are the solutions to systems of equations.

Given equations : 2x + y = 10 .......equation 1

                             −x + 2y = 5 ......equation 2

Let's take the equation : 2x + y = 10

when x=0, y = 10 and when y=0, x=5

So, the first line passes through (0,10) and (5,0).

Now, If we look at second equation :   −x + 2y = 5

when x=0, y = 2.5 and when y=0, x= -5

So, the second line passes through (0,2.5) and (-5,0).

Now, we've −x + 2y = 5

we'll use substitution method to find out the intersection point.

multiplying it by 2, we get -2x + 4y = 10 ......equation 3

Adding equation 1 and 3,

we get, 5y = 20

             y = 4

Putting y = 4 in equation 3,

we get, x= 3.

Hence, The intersection point is (3,4).

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Answer:

32

Step-by-step explanation:

0.8 x

Answer:

32

Step-by-step explanation:

To find the value of ( f ∘ g ) (4), we need to first substitute 4 into the definition of g(x) and then substitute the result into the definition of f(x).

First we substitute 4 into g(x):

g(4) = -2(4) + 15 = -8 + 15 = 7

Now we substitute 7 into f(x):

f(g(4)) = f(7) = 7^2 - 5(7) - 2 = 49 - 35 - 2 = 12

So the value of ( f ∘ g ) (4) is 12.

Answer:

1) 143 square inches

2) 32 square inches

3)152 square yards

4) 150 square inches

Step-by-step explanation:

        base=  11 in  ;height = 13 in

           [tex]\sf \boxed{\text{Area of parallelogram = base * height}}[/tex]

                                               = 11 * 13

                                               = 143 square inches

          base =  8 cm ; height = 8 cm

      [tex]\sf \boxed{\text {Area of triangle = } \dfrac{1}{2}*base * height}[/tex]

                                 [tex]\sf =\dfrac{1}{2}*8 * 8\\\\= 4 * 8\\\\= 32 \ in^2[/tex]

       diagonal = p = 7 + 12 = 19 yd

        diagonal 2 = q = 8 + 8 = 16 yd

[tex]\sf \boxed{\text{Area of kite =} \dfrac{pq}{2}}[/tex]

                    [tex]\sf =\dfrac{19*16}{2}\\\\= 19*8\\\\= 152 \ yd^2[/tex]

        a = 13 in ; b = 12 ; h = 12 in

a,b are the parallel sides of the trapezium.

[tex]\sf \boxed{\text{Area of trapezium = }\dfrac{(a + b)*h}{2}}[/tex]

                                [tex]\sf = \dfrac{(13+12)*12}{2}\\\\\\=\dfrac{25*12}{2}\\\\=25*6\\\\= 150 \ in^2[/tex]

Series: 1 + 3 + 5 + 7 + 9 + ...

Proof by PMI:

P: The series starts with 1 and increases by 2 for each consecutive term.

M: The nth term of the series is 2n - 1.

I: The series is an arithmetic series with a common difference of 2.

Operations of functions:

Addition: (f + g)(x) = f(x) + g(x)

Example: f(x) = 2x + 1 and g(x) = 3x - 2, then (f + g)(x) = (2x + 1) + (3x - 2) = 5x - 1

Multiplication: (f * g)(x) = f(x) * g(x)

Example: f(x) = 2x + 1 and g(x) = 3x - 2, then (f * g)(x) = (2x + 1) * (3x - 2) = 6x^2 - 2x + 3x - 2 = 6x^2 + x - 2

GE4 is a mathematical modeling course, in which I have learned how to use mathematical methods and models to analyze and solve real-world problems. I learned how to use statistical analysis, optimization, and simulation to make predictions and decisions. I also learned how to use various tools and software to create and analyze models. I learned to use mathematical tools to solve problems in different fields such as finance, engineering, and science.

4000 donuts will Pamela need to sell in order to reach her goal.

What is the profit?

Profit is when the selling price is more than the cost price or revenue is more than the cost while loss is the opposite of profit.

To calculate the number of donuts Pamela needs to sell to reach her goal, you need to divide her desired profit by the profit per donut.

If the cost of ingredients for each donut is $0.67 and she plans to sell each donut for $2.99, the profit per donut would be $2.99 - $0.67 = $2.32.

To reach her goal of making at least 4000, she needs to make a profit of $2.32 x 4000 = $9280.

So she needs to sell $9280/$2.32 = 4000 donuts.

Hence,  4000 donuts will Pamela need to sell in order to reach her goal.

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the longest interval in which the initial value problem is certain to have a unique twice differentiable solution is (-∞, ∞).

Initial value problem:

y'' + 4y' + 4y = 0, y(0)=1, y'(0)=2

The longest interval in which the initial value problem is certain to have a unique twice differentiable solution is the interval (-∞, ∞).

The given initial value problem is a second order linear homogeneous differential equation. This type of equation is known to have a unique twice differentiable solution on the interval (-∞, ∞). Therefore, the longest interval in which the initial value problem is certain to have a unique twice differentiable solution is (-∞, ∞).

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Answer: The quotient of 2 and 9 is 0.2222 (approximately) or 2/9

Step-by-step explanation:

Quotient is a mathematical term that refers to the result of dividing one number by another. In this case, the quotient of 2 and 9 is found by dividing 2 by 9, which results in 0.2222 (approximately) or 2/9.

It's important to note that the quotient is a decimal number because 9 doesn't divide into 2 exactly, so there is a remainder of 0.2222. The quotient represents the number of times 9 can be divided into 2, which is a fraction of a time. In this case, 9 can be divided into 2 only 0.2222 times.

I hope this helps :)

The quotient of 2 and 9 is the result of the division of 2 by 9 which is approximately 0.2222.

The question is asking for the quotient of 2 and 9. The quotient is the result of division. So, to find the quotient of 2 and 9, you need to divide two by nine.

The calculation is as follows: 2 ÷ 9 = 0.2222 (rounded to the fourth decimal place).

So, the quotient of 2 and 9 is approximately 0.2222.

Always remember, that when the divider (the number we divide by) is larger than the dividend (the number to be divided), we get a quotient less than one.

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PQ is the length of the line segment that is parallel to AB and CD, which intersects DA at P and BC at Q. The length of PQ can be found using the Pythagorean Theorem.

Let PQ = x.

Since the line is parallel to AB and CD, the triangles APE, PQC, and BQD are all right triangles.

Using the Pythagorean Theorem,

12^2 + x^2 = 18^2

x^2 = 18^2 - 12^2

x^2 = 324 - 144

x^2 = 180

x = √180

Therefore, PQ = √180

Since the line through E is parallel to AB and CD, the triangles APE, PQC, and BQD are all right triangles. Using the Pythagorean Theorem, we can calculate the length of PQ. We let PQ = x and set up the equation 12^2 + x^2 = 18^2. After solving for x^2, we get x^2 = 180, and x = √180. Therefore, PQ = √180. This is the length of the line segment that is parallel to AB and CD which intersects DA at P and BC at Q.

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Answer:

She should expect 8 candies

Step-by-step explanation:

If 13 were not green that would leave 2 that were green which means that ( hoping that the same amount is in each one) if you count by 2's 3 more times you would get 8 and if there is more just continue counting by 2's

Answer: g = 3 sqrt n/ n

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

The radius of a circle with area of 27 square meters is 3 meters.

What is area of a circle?

The area of a circle is the space encircled or encompassed by its circumference. It is represented in the form of square units.

Area of circle(A)= πr^2

where 'r' represents the radius of the circle

We are given that area of a circle is 27 square meters i.e.

⇒πr^2 = 27

The value of π is 3

So, we get

⇒3r^2 = 27

⇒r^2 = 9

⇒r = 3

Hence, the radius of a circle with area of 27 square meters is 3 meters.

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Expression represents the probability of the given number of attempts and the success rate is given by option E. B( 60 , 45 , 30 ).

As given in the question,

In the given situation,

Let us consider 'n' represents the number of trials attempt by the weightlifter.

'p' represents the probability of success in his number of trials.

And 'r' represents the number of success out of his total number of attempts.

Here n = 60

p = 45%

r = 30

Using binomial distribution method we can represents the expression of the probability for the given condition  :

B( n , p , r )

Substitute the values we get,

= B( 60, 45, 30 )

Therefore, for the given total number of lifts , success rate the expression represents the probability is given by option E . B ( 60, 45 , 30 ).

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Answer:

is already in the simplest form. It can be written as 0.47138 in decimal form (rounded to 6 decimal places).

Find the GCD of numerator and denominator

GCD of 140 and 297 is 1

When you divide both the numerator and denominator by 1

The answer will remain the same

Answer:

144600

Step-by-step explanation:

In 2010, pop'n 144,000.

From 2010 to 2015, the population grew by 8%.

so by 2015 = 144000*1.08 = 155520

From 2015 to 2020, it fell by 7%.

so 155520 * (1-7%) = 155520 * 0.93 = 144634

round to the nearest 100 = 144600

Answer:

Step-by-step explanation:

Maria clothing store sold $5230 worth of items last week. She invested half of her income from the week in new items to sell.Then she paid herself $300 salary for the week. A manufacturer gave her a rebate of $500 for items that were reduced at the factory. What was her ending balance? Write the expression and find the balance.

Y is 1/3x +5 an equation of the line that passes through point P.

The slope of the new line will be equal to (1/3) = 1/3because perpendicular lines have slopes that are the negative reciprocals of one another.

X and Y are represented by X and Y, (x,y) is the pair of coordinates for the point, and m is the slope in this equation, which reads: Y - y = m(X-x).

Y-4 = 1/3(X-1), which leads to Y = 1/3X +1 +4 and Y = 1/3X +5.

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Check the picture below.

so we are really looking for the equation of a parabola whose vertex is at (2 , 3) and it passes through (4 , 1)

[tex]~~~~~~\textit{vertical parabola vertex form} \\\\ y=a(x- h)^2+ k\qquad \begin{cases} \stackrel{vertex}{(h,k)}\\\\ \stackrel{a~is~negative}{op ens~\cap}\qquad \stackrel{a~is~positive}{op ens~\cup} \end{cases} \\\\[-0.35em] ~\dotfill\\\\ \begin{cases} h=2\\ k=3\\ \end{cases}\implies y=a(~~x-2~~)^2 + 3\hspace{4em}\textit{we also know that} \begin{cases} x=4\\ y=1 \end{cases}[/tex]

[tex]1=a(4-2)^2+3\implies -2=a(2)^2\implies -2=4a \\\\\\ \cfrac{-2}{4}=a\implies -\cfrac{1}{2}=a~\hfill \boxed{y=-\cfrac{1}{2}(x-2)^2 + 3}[/tex]

A semi-annual coupon bond is a bond that pays interest twice a year at a fixed rate.

To determine the amount of semi-annual coupon paid, you can use the following formula:

C = (r * FV) / n

Where:

C = coupon payment (semi-annual)

r = annual coupon rate (3% in this case)

FV = face value (100,000 in this case)

n = number of coupon payments per year (2 for semi-annual)

So, the semi-annual coupon payment for the bond is:

C = (0.03 * 100,000) / 2

C = 1500

The bond matures after 8 years, so the bond will pay 8*2 = 16 semi-annual coupons.

The sample space consists of 8 possible outcomes, each with an equal probability of 1/8. The outcomes are the combinations of heads (h) and tails (t) when flipping 3 coins.

1. Determine how many possible outcomes there are in the sample space.

There are 8 possible outcomes in the sample space: hhh, hht, hth, htt, thh, tht, tth, and ttt.

2. Determine the likelihood of each result.

Since all outcomes have equal probability, the probability of each outcome is 1/8.

In this experiment, we are flipping three coins, and each one lands either heads (h) or tails (t). Our sample space consists of all the possible combinations of heads and tails that can occur when flipping the coins. Therefore, our sample space is {hhh, hht, hth, htt, thh, tht, tth, ttt}. Since all outcomes have equal probability, the probability of each outcome is 1/8. This means that the probability of each combination of heads and tails is the same. For example, the probability of getting 3 heads is 1/8 and the probability of getting 2 heads and 1 tail is also 1/8.

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Answer:

the answer is   d t d T ​ = c ( T + T 0 ​ )

Step-by-step explanation:

Answer: I hope this helps you

Step-by-step explanation:

[tex]y=x^2\sqrt{4x-3}\implies \cfrac{dy}{dx}=\stackrel{\textit{\LARGE product rule}}{2x\sqrt{4x-3}~~ + ~~x^2\cdot \stackrel{\textit{chain rule}}{\cfrac{1}{2}(4x-3)^{-\frac{1}{2}}(4)}} \\\\\\ \cfrac{dy}{dx}=2x\sqrt{4x-3}~~ + ~~\cfrac{2x^2}{\sqrt{4x-3}}\implies \cfrac{dy}{dx}=\cfrac{8x^2-6x+2x^2}{\sqrt{4x-3}} \\\\\\ \cfrac{dy}{dx}=\cfrac{6x^2-6x}{\sqrt{4x-3}}\implies \cfrac{dy}{dx}=\cfrac{6x(x-6)}{\sqrt{4x-3}}[/tex]

The probability of rolling two trick number cubes with the numbers 5, 10, and 15 on them can be calculated using the formula P(A) = n(A) / n(S), where P(A) is the probability of event A, n(A) is the number of favorable outcomes, and n(S) is the total number of possible outcomes.

In this case, the total number of possible outcomes is 6, since there are six possible combinations of two number cubes. The number of favorable outcomes for a sum of 10 is 2, since there are two possible combinations (5 and 5, and 10 and 15). Therefore, the probability of rolling a sum of 10 is 2/6, or one-third. The probability of rolling a sum of 15 is also one-third, since there is only one possible combination (10 and 5). The probability of rolling a sum of 20 is one-sixth, since there is only one possible combination (10 and 10). Therefore, the probability model for the sum of the two number cubes is a 2-column table with 3 rows. Column 1 is labeled Sum with entries 5, 10, 15. Column 2 is labeled probability with entries one-half, one-third, one-sixth.

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The compound interest the answer is  b)$23377.

What is compound interest?

The interest that is calculated using both the principal and the interest that has accrued during the previous period is called compound interest. It differs from simple interest in that the principal is not taken into account when determining the interest for the subsequent period with simple interest.

We know that for compound interest, A = [tex]P(1+\frac{r}{n})^n[/tex]

Where,

A = Future amount = $68,000

P = ??

r = 3.575% annual = 0.03575

n = 4 as interest is compounded quarterly

t = time in year = 30 years

Putting the values,

=> 68000 = P [tex](1+\frac{0.03575}{4})^{4*30}[/tex]

=> 68000 = P[tex](1+\frac{0.03575}{4})^{120}[/tex]

=> 68000 = P (1.0089375)[tex]^{120}[/tex]

=> P = $23377.5

Hence the correct option is b)$23377.

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Answer:

108

Step-by-step explanation:

p=2(l+w)

352=2(l+68)

352=2l+136

2l=352-136

2l=216

l=108

Formula of Perimeter of rectangle( P ) = 2 ( l + b )

Perimeter = 352m

Width = 68m

Length = ?

Now

Perimeter ( P ) = 2 ( l + b )

352m = 2 ( l + 68m )

352m = 2l + 136m

352m - 136m = 2l

216m = 2l

[tex]l \: = \frac{216m}{2} \\ [/tex]

l = 108m

hence the length is 108m...

The percentages of each snack type that were sold are given as follows:

A percentage is one example of a proportion, as it is obtained by the number of desired outcomes divided by the number of total outcomes, and then multiplied by 100%.

Hence the percentages for each type are obtained as follows:

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The linear equation for the given situation is y= cx + 2.50.

What is a linear equation?

A linear equation is one that has the highest degree of 1 possible. This indicates that there are no variables in a linear equation with exponents greater than 1. Such an equation on the graph, forms a straight line.

We are given that a car service charges $2.50 to pick us up and charges c cents for each mile of our trip.

So, the equation that represent the cost of a car based on the number of miles driven is given by:

y= cx + 2.50

Hence, the linear equation for the given situation is y= cx + 2.50.

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The weekly profit changes by $1000s/week.

What is profit?

The profit is defined as the amount gained by selling a product, and it should be more than the cost price of the product. In other words, the profit is a gain obtained from any business activities.

To find the increase in weekly revenue, we need to find the difference in revenue at the two output levels:

2500 units/week: Revenue = 100(2500) + 43 = 2543

2000 units/week: Revenue = 100(2000) + 43 = 2043

So the increase in weekly revenue is 2543 - 2043 = $500s/week.

To find the change in weekly profit, we need to subtract the change in cost from the change in revenue:

Change in cost: 2500 units/week - 2000 units/week = 500 units/week * 3 $1000s/week/unit = 1500 $1000s/week

Change in profit: $500s/week - $1500s/week = -1000

Hence, the weekly profit changes by $1000s/week.

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