Answer:
y - 1 = 6(x+7)
Step-by-step explanation:
point slope form is y-y₁=m(x-x₁)
given m = 6 and the point is (-7,1)
plug in your values
remember that an ordered pair is (x,y)
y-y₁=m(x-x₁) ----> y-1 = 6(x+7)...............just plug in values
Solve the compound inequality.
3x -4 > 5 or 1 - 2x≥7
Answer:
3x -4 >5 = x > 3.
1 -2x>7 = x ≥ -3
Step-by-step explanation:
Netflix would like to estimate the proportion of their current subscribers who would pay extra for a premium membership including access to more movies and tv shows. To do this, they plan to calculate a 95% confidence interval to estimate the proportion. They would like a margin of error of. 5. How many subscribers must they sample to obtain this interval?.
They must sample 385 subscribers to obtained this interval.
What do you mean by sample?
An outcome of a random experiment is a sample. A random variable is sampled when we choose one particular value from its range of potential values.
According to the given question,
We have:
95% confidence interval for z-score is 1.96
Using this formula to find the number of subscribers they must sample to obtain this interval
n≥ (zσ/2 ÷ 2ME)²
Where:
n= Sample
zσ = Z-score
ME = margin of error
Let put in the formula,
n≥ [1.96 / 2(0.05)]²
n≥ [1.96 / 0.1]²
= (19.6)²
= 384.16
=385 (Rounded)
Therefore, they must sample 385 subscribers to obtained this interval.
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Find the value of x that would make the quadrilateral below a parallelogram.
The value of x=5 if given quadrilateral is parallelogram.
What is parallelogram?
A parallelogram is a flat shape with four straight, connected sides so that opposite sides are congruent and parallel. This means a parallelogram is a plane figure, a closed shape, and a quadrilateral.
We know, the opposite sides of parallelogram are equal
therefore, 5x-8 = 2x+7
5x -2x = 7+8
3x = 15
x =5
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Annie has 5 pets, Eve has 3 and Molly has 10. What is the
mean amount of pets?
Answer: 6
Step-by-step explanation: the mean is the average. 5+3+10 = 18 and then you divide by the people (3) to get 6.
find the measure of the indicated angle, GIVE STEPS PLEASE!!
The measures of the indicated angles are 35 °, 238.73° & 18.40 ° respectively.
What are the trigonometric identities?
All trigonometric identities are based on the six trigonometric ratios. Sine, cosine, tangent, cosecant, secant, and cotangent are the values. All of these trigonometric ratios are defined using the sides of a right triangle, such as an adjacent side, opposite side, and hypotenuse side.
Let's consider,
x = opposite side of an angle of the triangle.
y = adjustant side of an angle of the triangle.
z = hypotenuse of the triangle.
θ = angle of the triangle.
i) In the first diagram
We have,
y = 49
z = 60
[tex]cos\theta = \frac{y}{z}[/tex]
θ = cos⁻¹(0.816)
θ = 35 °
ii) In the second diagram
We have,
y = 41
x = 10
θ = ?
[tex]tan\theta = \frac{x}{y}[/tex]
θ = tan⁻¹(0.2439)
θ = 238.73°
i) In the third diagram
y = 53
x = 17
θ = ?
[tex]tan\theta = \frac{x}{y}[/tex]
θ = tan⁻¹(3.11)
θ = 18.40 °
Hence, the measures of the indicated angles are 35 °, 238.73° & 18.40 ° respectively.
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Order the number from least to greatest.
0.8 8% 18% 1/8 8/20
Answer:
18%,1/8,18%, 8/20 0.8
Step-by-step explanation:
0.8 8/100 18/100 1/8 8/20
0.8 , 0.08 0.18 0.12 0.4
0.08 0.12 0.18 0.4 0.8
Answer:
8%, 1/8, 18%, 8/20
Step-by-step explanation:
Lets make all of these into decimals (its easier that way).
8% = 0.08
18% = 0.18
1/8 = 0.125
8/20 = 0.4
Now, put them into least to greatest! :)
the distribution of sample means approaches a normal curve as \ \ \ \ \ \ \ \ increases to infinity?
The correct statement is 'the distribution of sample means approaches a normal curve as sample size(n) increases to infinity'
In this question, we have been given a statement 'the distribution of sample means approaches a normal curve as _________ increases to infinity'
We need to complete the statement.
The Central Limit Theorem tells us that for a population with any distribution, the distribution of the sample means approaches a normal distribution as the sample size increases.
This means, the distribution of sample means approaches a normal curve as the sample size i.e., n increases to infinity.
Therefore, the correct statement is 'the distribution of sample means approaches a normal curve as sample size(n) increases to infinity'
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The area of a parallelogram is 12 square units. one side of the parallelogram is 18 units long. the other side is 6 units long. determine whether each dimension could be the height of the parallelogram. pick all correct. a. 2/3 units b. 3/2 units c. 2 units d. 3 units
option (a) and (C).
The height of the parallelogram is 2 units and 2/3 units.
The sides of parallelogram are 6 units and 18 units .
Area of parallelogram (A) =12 square units.
Base of parallelogram (B) = 6 units.
formula used:
A = B*H
12 = 6*H
H = 12/6
H = 2 units.
if, base of parallelogram (B) = 18 units
A = B*H
12= 18*H
H = 12/18
H = 2/3 units.
the height of parallelogram are 2 and 2/3 units.
#123
For more information:
The parallelogram has a height of 2/3 units.
Given that,
A parallelogram has a surface area of 12 square units. The parallelogram has a side that is 18 units long. There are 6 units on the other side.
For a parallelogram to find the height;
Let,
Area of the parallelogram = Base * Height
12 = 18 * H
H = 12/18
H = 2/3
Therefore, the height of the parallelogram is 2/3 units.
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If a population of 1000 people were to increae by 5% every year, what would the population be in 20 year?
The population in the next 20 years would be 2653 people. The result is obtained by the equation of estimating the future population.
How to estimate future population?
The future population can be estimated by the following equation:
P = P₀ × (1 + i)ⁿ
Where
P = population in the expected yearP₀ = current populationi = growth raten = number of periodsIf the recent population is 1000 people and the growth rate is 5% per year, what would the population be in the next 20 years?
The population in the next 20 years would be
P = P₀ × (1 + i)ⁿ
P = 1000 × (1 + 0.05)²⁰
P = 1000 × (1.05)²⁰
P = 1000 × 2.6533
P = 2653 people
Hence, the population in the next 20 years would be 2653 people.
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Which equation represents the line that is
perpendicular to the graph of 4x + 3y = 9 and
passes through (-2, 3)?
A. 3x-4y=-18
B. 3x+4y=18
C. 3x-4y=-6
D. 3x+4y=6
The equation that represents the line that is perpendicular to the graph of 4x + 3y = 9 and passes through (-2,3) is
[tex]y = \frac{3}{4}x+\frac{9}{2}[/tex]
Let us revise some rules
1. The product of the slopes of the perpendicular line is -1, that means if the slope of one line is m, then the slope of the other is [tex]\frac{-1}{m}[/tex]
2. The slope of a line whose equation is ax + by = c is [tex]m = \frac{-a}{b}[/tex], where a is the coefficient of x and b is the coefficient of y
The equation of the given line is 4x + 3y = 9
[tex]m = \frac{-a}{b}[/tex]
whereas a is the coefficient of x and b is the coefficient of y
Therefore the coefficient of x = 4 and the coefficient of y = 3
a = 4 and b = 3
[tex]m = \frac{-a}{b}[/tex]
The slope of the perpendicular line to the given line is [tex]\frac{-1}{m}[/tex]
That means reciprocal the fraction and change its sign
The slope of the perpendicular line = [tex]\frac{3}{4}[/tex]
The form of the equation is y = mx + b
- Substitute m by [tex]\frac{3}{4}[/tex]
y = [tex]\frac{3}{4}[/tex] x + b
To find b substitute x and y in the equation by the coordinates
of a point on the line
The perpendicular line passes through point (-2 , 3)
x = -2 and y = 3
3 = [tex]\frac{3}{4}[/tex](-2) + b
3 = [tex]\frac{-3}{2}[/tex]+ b
Add to both sides
[tex]\frac{9}{2}[/tex] = b
y = [tex]\frac{3}{4}[/tex] x + [tex]\frac{9}{2}[/tex]
The equation that represents the line that is perpendicular to graph of 4x + 3y = 9 and passes through (-2,3) is y = [tex]\frac{3}{4}[/tex] x + [tex]\frac{9}{2}[/tex]
Hence the answer is perpendicular to graph of 4x+3y=9 and passes through (-2,3) is [tex]y = \frac{3}{4}x+\frac{9}{2}[/tex]
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A tram moved downward 35 meter in 7 econd at a contant rate. What wa the change in the tram' elevation each econd?
If a tram moved downward 35 meter in 7 seconds at a constant rate, then the change in the tram's elevation for each second is 5 meter
The total distance that tram moved downwards = 35 meters
Total time taken = 7 seconds
Here we have to use the unitary method
The change in the tram's elevation for each second = The total distance that tram moved downwards / Total time taken
Substitute the values in the equation
The change in the tram's elevation for each second = 35 /7
Divide the terms
= 5 meters
Hence, if a tram moved downward 35 meter in 7 seconds at a constant rate, then the change in the tram's elevation for each second is 5 meter
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please help me asap
According to the solving the co-ordinate mid-point D is (-4,0).
What is Mid-Point?A point on a line which bisects the same line is a mid point. It divides the line in two equal halves.
The mid-point is equidistant from both the ends of the given line.
Middle point formula in coordinate geometry
M={(x1+x2)/2,(y1+y2)/2}
According to the Given information:We need to find the coordinates of mid-point D of line AB, where
A is (-6x,4y)
B is (-2x,-4y)
By using Mid-point formula for coordinate D, we get
x=-6+(-2)/2
⇒ x=-6-2/2
⇒x=-8/2
⇒x=-4
And y coordinate
y=4+(-4)/2
⇒y=4-4/2
⇒y=0/2
⇒y=0
The coordinates of mid-point D of line AB is (-4,0)
Hence, D is (-4,0)
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a rock is thrown off a 200-foot cliff. the trajectory of the rock is modeled by the function h(t)=(-10t^2)+200, where h is the height in feet and t is the time in seconds. when will the rock hit the ground.
Answer:
4.47 seconds.
Step-by-step explanation:
Given function:
[tex]h(t)=-10t^2+200[/tex]
where:
h is the height (in feet).t is the time (in seconds).The rock will hit the ground when h(t) = 0.
Therefore, set the function to zero and solve for t:
[tex]\begin{aligned}h(t)&=0\\\implies -10t^2+200&=0\\10t^2&=200\\t^2&=20\\t&=\pm\sqrt{20}\\t&=-4.47, 4.47\;\; \sf (2\;d.p.)\end{aligned}[/tex]
As time is positive, t = 4.47 s only.
the spread of the sampling distribution of is the spread of the corresponding population distribution sampling distribution
The spread of the sampling distribution of x is smaller than the spread of the corresponding population distribution sampling distribution.
In the given question,
We have to find the spread of the sampling distribution of x is............... the spread of the corresponding population distribution sampling distribution.
As we know that,
The size of the sample as well as its dispersion affect the sampling distribution's spread. We calculate the sampling distribution's spread as the population's standard deviation divided by the sample size's square root.
So, the spread of the sampling distribution of x is smaller than the spread of the corresponding population distribution sampling distribution.
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The right question is
The spread of the sampling distribution of x is .......... the spread of the corresponding population distribution sampling distribution.
larger than
smaller than
the same as
exactly 1/2
help me the pic is the queston
3) Hugh has a goal of exercising 12/4 hours a day. He plans to go on several runs
today. His runs take him 4/6 of an hour. How many runs will Hugh need to go on?
About 75% of the wate produced in the U. S i recyclable. Micah’ family ha 40 pound of trah. He want to etimate how much of thi trah i recyclable
Answer:
30 lb
Step-by-step explanation:
75% of trash is recyclable.
40 lb trash.
75% of 40 lb = = 40/100 × 75 lb = 0.40 × 75 lb = 30 lb
Answer: 30 lb
what equations could i use with 1 2 3 4 5 to get 35
Answer:
(5x5) + (5x2)
Step-by-step explanation:
is that helpful i dont really get what youre asking
Answer:
1+2*3*5+4
Step-by-step explanation:
The length of a rectangle is 7 cm more than the width. If the perimeter is 58 cm, find the length and width.
Answer:
length = 32.5, Width = 25.5
Step-by-step explanation:
Let x rep the width. Let x plus 7 rep the length.
x + x + 7 = 58
2x=58-7
2x=51
2x/2 = 51/2
x= 25.5
x plus 7 =
= 25.5 + 7
=32.5
✨️Hope that helps✨️
Last year, Jacky's age was six times the age of his son. If Jacky's son was 5 years old last year, find the age of Jacky this year.
True or false: If the ratio of QR to RS on the number line is 2:1, coordinate of R must be 2.
Step-by-step explanation:
false.
QR and ES are line segments.
a ratio between them is about their lengths, not about their position.
so, no, the given ratio has nothing to do with the coordinate itself.
Let f(x) = 4x-8 and g(x)=x+3. Find f(g(x)) and g(f(x)).
f(g(x)) = (Simplify your answer.)
g(f(x)) =
(Simplify your answer.)
Answer:
[tex] \huge{ \bold{f(g(x)) = 4x + 4}} \\ \\ \huge{ \bold{g(f(x)) = 4x - 5}}[/tex]
Step-by-step explanation:
f(x) = 4x-8
g(x)=x+3
In order to find f(g(x)) you substitute g(x) into f(x) that's where ever you find x in f(x) you replace it with g(x) and solve
We have
[tex]f(g(x)) = 4(x + 3) - 8 \\ = 4x + 12 - 8 \\ = 4x + 4[/tex]
In order to find g(f(x)) you substitute f(x) into g(x) that's where ever you find x in g(x) you replace it with f(x) and solve
We have
[tex]g(f(x)) = (4x -8) + 3 \\ = 4x - 8 + 3 \\ = 4x - 5[/tex]
Hope this helps you
In △abc, ​gf=17 in.​ what is the length of cf¯¯¯¯¯? enter your answer in the box. in.
The length of CF is 51 inches.
Complete question:
( In triangle ABC in which AD,BE and CF are the medians ),
In △ABC, GF=17 in. What is the length of CF¯¯¯¯¯? Enter your answer in the box.
What is the median in a triangle?
A line segment that joins a vertex to the mid-point of the side that is opposite to that vertex
The centroid G divides each median into the ratio 2:1, so GF is 1/3 of CF. That is, ...
CF = 3(GF) = 3(17 in)
CF = 51 in
So, the length of CF is 51 inches.
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A clerk is marking up merchandise 32%. The original price of an item is $450. What will be the retail price?
Answer:
$594
Step-by-step explanation:
450x1.32=$594
450+32%=$594
Write the equation of the line in slope-intercept form that passes through (3, 5) and is perpendicular to the line
3y + 4x = 12
Answer:
Step-by-step explanation:
find the gradient of given equation:
3y+4x=12
3y= -4x+12
y= -4/3x+4
gradient= -4/3
perpendicular gradient:
m1xm2=-1
-4/3m2=-1
-4m2=-3
m2= 3/4
find y-intercept by inputting coordinates in y=mx+c
5=3/4(3)+c
5=9/4+c
5-9/4=c
c= - 11/4
equation:
y=3/4x-11/4
Help me pls.
100 points for those who work it out
Both areas are equal, 4 cm²
Answer:
Area of triangle = 4 cm²
Area of square = 4 cm²
Step-by-step explanation:
[tex]\boxed{\begin{minipage}{4 cm}\underline{Area of a triangle}\\\\$A=\dfrac{1}{2}bh$\\\\where:\\ \phantom{ww}$\bullet$ $b$ is the base. \\ \phantom{ww}$\bullet$ $h$ is the height.\\\end{minipage}}[/tex]
From inspection of the given diagram:
b = 2 cmh = 4 cmSubstitute the values into the formula to find the area of the triangle:
[tex]\begin{aligned}\implies A&=\dfrac{1}{2} \times 2 \times 4\\A&=1 \times 4\\A&=4\;\sf cm^2\end{aligned}[/tex]
[tex]\boxed{\begin{minipage}{4 cm}\underline{Area of a square}\\\\$A=s^2$\\\\where:\\ \phantom{ww}$\bullet$ $s$ is the side length.\\\end{minipage}}[/tex]
From inspection of the given diagram:
s = 2 cmSubstitute the value into the formula to find the area of the square:
[tex]\begin{aligned}\implies A&=2^2\\A&=2 \times 2\\A&=4\;\sf cm^2\end{aligned}[/tex]
The area of the triangle is 4 cm², and the area of the square is 4 cm², thus proving that the triangle and the square have the same area.
115% = 38x + 161y
What is 100%?
Answer:
100% is 32.3x + 136.85y------------------------
Given115% = 38x + 161yFind 100%100% = 115% - 15% (38x + 161y) - 15% = (38x + 161y)*(1 - 0.15) = (38x + 161y)*0.85 =38x*0.85 + 161y*0.85 = 32.3x + 136.85yAnswer:
32.3x + 136.85y
Step-by-step explanation:
Let's take it as,
→ z = 100%
Forming the equation,
→ z + 15% = 38x + 161y
Now the value of z will be,
→ z + 15% = 38x + 161y
→ z = 38x + 161y - (1 - (15/100))
→ z = (38x + 161y) × (1 - 0.15)
→ z = (38x + 161y) × (0.85)
→ [ z = 32.3x + 136.85y ]
Hence, the answer is above.
Use the given information to prove that SVR = SUT
The ΔSVR ≅ ΔSUT by side angle side property of triangle.
What is congruency in triangles?The size of the sides and angles determines whether two or more triangles are congruent. The three sides and three angles of a triangle define its size and shape, accordingly. Two triangles are said to be congruent if their respective side and angle pairs are the same.
Both triangles are said to be congruent if the three angles and three sides of one triangle match the corresponding angles and sides of the other triangle.
In triangle SVR and triangle SUT
SR = ST (given)
∠RSV = ∠TSU ( Common)
SV = SU (given)
So, the ΔSVR ≅ ΔSUT by SAS property.
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The Tabel corresponds to which of the following scatterplots?
Answer :
Step-by-step
At Berry Fun Farm, Liz picked 12 pints of berries. If 25% of the pints were blueberries, how many pints of blueberries did Liz pick?
Answer: 25% of 12 is 3
Step-by-step explanation:
Since there 25% is 1/4 of 100%, you'd need to divide.
There are 12 pints of berries.
If 1/2 of 25% is 6 since [tex]2 \sqrt{12}=6[/tex], you can say that the percentage would be 2/4.
Now, divide 12 by 4: [tex]4\sqrt{12}=3[/tex]
3 in this case would be the 1/4 and the 1/4 is substituting 25%
So there are 3 pints of blueberries.
