Suppose that there were a positive correlation between the variables u and v. If v is 24 when u is 10, which of these is most likely to be the value of v when u is 20?
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Answer:
The correct answer is 48, given by option c.
Step-by-step explanation:
This question can be solved by proportions, using a rule of three.
Positive correlation means that the variables are directly proportional, and thus, we apply cross multiplication.
If v is 24 when u is 10, which of these is most likely to be the value of v when u is 20?
24 - 10
x - 20
Applying cross multiplication:
[tex]10x = 24*20[/tex]
Simplifying both sides by 10:
[tex]x = 24*2 = 48[/tex]
The correct answer is 48, given by option c.
Related Questions
Instructions in photo plz help
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YS = 2/3 × ( YV ) *.&.* SV = 1/3 × ( YV )
_____________________________
YS = 2/3 × ( YV )
4x + 14 = 2/3 × ( YV )
Multiply both sides by 3/2
( 4x + 14 ) × 3/2 = ( YV ) × 2/3 × 3/2
YV = 6x + 21 ( ☆ )
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SV = 1/3 × ( YV )
1 + 3x = 1/3 × ( YV )
Multiply both sides by 3
( 1 + 3x ) × 3 = ( YV ) × 1/3 × 3
YV = 9x + 3 ( ♡ )
_____________________________
YV = YV
( ☆ ) = ( ♡ )
6x + 21 = 9x + 3
Subtract both sides 3
6x + 21 - 3 = 9x + 3 - 3
6x + 18 = 9x
Subtract both sides 6x
6x - 6x + 18 = 9x - 6x
18 = 3x
Divide both sides by 3
18 ÷ 3 = 3x ÷ 3
x = 6
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YV = 6x + 21 = 9x + 3
YV = 6(6) + 21 = 9(6) + 3
YV = 57
Find the missing side. Round to the nearest tenth.
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Answer:
take 72 degree as reference angle
using cos rule
cos 72=b/h
0.30=6/x
0.30x=6
x=6/0.30
x=20
Step-by-step explanation:
Abdullah is kicking a soccer ball into the air. The path of the soccer ball can be modeled by a quadratic equation where the point (6, 12) represents the vertex and the x-axis represents the ground. Which equation could represent the location of the soccer ball when it hits the ground? A 0=−(x−6)2+12 B 0=−(x+6)2−12 C 0=−(x−6)(x−12) D 0=−(x+6)(x+12)
Answers
9514 1404 393
Answer:
A. 0 = −(x−6)^2+12
Step-by-step explanation:
The vertex form of a quadratic equation is ...
y = a(x -h)² +k . . . . . . for vertex (h, k) and scale factor 'a'
When the given vertex (h, k) = (6, 12) is used, we find the form of the equation to be ...
y = a(x -6)² +12
The ball will be on the ground when y = 0. Here, the vertical scale factor 'a' is -1, so the equation representing the ball being on the ground is ...
0 = -(x -6)² +12 . . . . . . matches choice A
The area of the largest cross section of a sphere and the circumference of the sphere are in the ratio 4:1.
The radius of the sphere is ___cm. The circumference of the sphere is about ___cm. The area of the largest cross section is about____ cm. The volume of the sphere is about ___cm
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Answer:
[tex](a)\ r = 8cm[/tex]
[tex](b\ Area = 200.96cm^2[/tex]
[tex](c)\ Volume = 2143.573cm^3[/tex]
Step-by-step explanation:
The largest cross-section of a sphere is the center.
So, we have:
[tex]A : C = 4 : 1[/tex]
Where
[tex]A = \pi r^2[/tex]
[tex]C =2\pi r[/tex]
Solving (a): The radius
[tex]A : C = 4 : 1[/tex] implies that
[tex]\pi r^2 : 2\pi r = 4 : 1[/tex]
Express as fraction
[tex]\frac{\pi r^2 }{ 2\pi r} = \frac{4 }{ 1}[/tex]
[tex]\frac{\pi r^2 }{ 2\pi r} = 4[/tex]
Divide by [tex]\pi r[/tex]
[tex]\frac{r}{ 2} = 4[/tex]
Make r the subject
[tex]r = 4 * 2[/tex]
[tex]r = 8cm[/tex]
Solving (b): Area of the largest cross-section.
[tex]Area = \pi r^2[/tex]
[tex]Area = 3.14 *8^2[/tex]
[tex]Area = 200.96cm^2[/tex]
Solving (b): Volume of the sphere
[tex]Volume =\frac{4}{3}\pi r^3[/tex]
[tex]Volume =\frac{4}{3} * 3.14 * 8^3[/tex]
[tex]Volume = 2143.573cm^3[/tex]
what is a valid inference?
Answers
Answer: give more info
Step-by-step explanation: i think this deserves a brainlyest
Determine whether the scenario involves independent or dependent events.
9) A basket contains seven apples and six peaches. You randomly select a piece of fruit and then return it to the basket. Then you randomly select another piece of fruit. The first piece of fruit is an apple and the second piece is a peach.
A) Independent
B) Dependen
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Answer:
independence is the correct answer
who was the artist that cut off his ear?
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Answer:
Vincent Van Gogh
Step-by-step explanation:
He was the artist who cut off his ear in 1888 in December I think...
I hope this helped :))
Help ASAP!!!!!!!!!!!!!!!!!???????????
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Answer:
it would be number A. number 1
Find the area of the trapezoid 6.5 cm 9 cm 18.5 cm
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Answer:
if the 'a base' is 6.5 & the height is 9 & 'b base' is 18.5, the answer is a = 112.5 cm^3
3 times a number is 2 more the number Find the number
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3a=2+a
2a=2
a=1
I need a little help. (The question is on the screenshot by the way)
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Answer:
45
Step-by-step explanation:
the answer iud D
Answer:
[tex] \boxed{8} < \sqrt{80} < \boxed{9}[/tex]
Step-by-step explanation:
[tex]\sqrt{80} =8.94427191[/tex]
Since, 8.94427191 falls between 8 and 9.
[tex] \therefore \: \boxed{8} < \sqrt{80} < \boxed{9}[/tex]
The computer club spent $27.75 on beverages for the end-of-year picnic. The total cost of the beverages was $0.75 per person. How many people attended the picnic
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What is the slope of the line?
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To find the slope, one will need to use the expression Δy/Δx (y final - y initial)/(x final - x initial)
For this problem, that equals 1/3
Now we will use the point slope form
(y - y initial) = m (x - x initial):
y + 1 = 1/3 (x - 2)
y = 1/3x - 5/3
Select the correct answer. Which statement is true about the effects of the transformations on the graph of function f to obtain the graph of function g. g(x) = f(x − 3) + 4 A. The graph of function f is shifted left 3 units and down 4 units. B. The graph of function f is shifted right 3 units and up 4 units. C. The graph of function f is shifted right 3 units and down 4 units. D. The graph of function f is shifted left 3 units and up 4 units.
Answers
I got 100% on the Master Test.
Find an equation of the line passing through the pair of points. Write the equation in slope-intercept form.
(3,7), and (7.3)
y=0
Answers
Answer:
y=10-x
Step-by-step explanation:
1. Find the slope of the equation using the formula (change in y/change in x)
(3-7)/(7-3)=-4/4=-1
2. Plug in the slope and one of the coordinate points to the slope-intercept form to find the y-intercept.
slope-intercept form: y=mx+b
7=-3+b
b=10
3. Put the slope-intercept form of the equation together.
y=10-x
I need help on 5-7. Its a little confusing for me
Answers
Answer:
5. x = 5, y = 3
6. x = 0, y = 4
7. x = -1, y = 1
Step-by-step explanation:
5. substitute 3(value of y) into the equation y = x - 2:
=> 3 = x - 2
=> x = 5
6. substitute 0(value of x) into the equation y = x + 4:
=> y = 0 + 4
=> y = 4
7. substitute 1(value of y) into the equation y = 2x + 3:
=> 1 = 2x + 3
=> 2x = -2
=> x = -1
A man bought a scooter for $100 and sold it for $120. He later bought it back for $140 and sold it again for $160. How much did he make or lose as a scooter salesman? (NO LINKS WILL REPORT WITH OUT HESITATION)
Answers
Answer:
Step-by-step explanation:
- 100
+ 120 = 20
-140 = -20
+160 = 20
so every time he sold it, he gained 20 and lost 20 every time he bought it back
In a classroom,1/6,of the students are wearing blue shirts,and 2/3 are wearing white shirts. There are 12 students in the classroom,ow many students are wearing shirts other than blue shirts or white shirts?
Answers
Answer:
2
Step-by-step explanation:
1/6 x 12 = 2
2/3 x 12 = 8
8 + 2 = 10
12 - 10 = 2
Answer:
2 not wearing either blue or white
Step-by-step explanation:
Find out the fraction that represents those that are wearing either blue or white. Let x be that fraction
x = 2/3 + 1/6
Change 2/3 and 1/6 to 12ths. because there are 12 students in the class.
2/3 = 2*4 / (4 *O 4) = 8/12
1/6 = 2*1/(2 * 6) = 2 / 12
x = 8/12 + 2/12
x = 10/12 Normally you would reduce this fraction because we are not using the Lowest common Denominator. In this case we just leave it.
There are 12/12 - 10/12 = 2/12 that are missing.
So 2 people are Not wearing either blue or white.
How many quadrilaterals can I construct with four right angles
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Answer:2
Step-by-step explanation:
Given the data presented in the bar graph, which morph represents 10% of the birthdays for the students surveyed?
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Answer:
June will be the correct answer in my opinion
Solve the system by elimination.
-4x - 4y = 0
4x + 4y = 0
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[tex]\begin{bmatrix}4x+4y=0\\ -4x-4y=0\end{bmatrix}[/tex]
Subtract 4y from both sides.
[tex]4x+4y-4y=0-4y[/tex]
Simplify
[tex]4x=-4y[/tex]
Divide each side by 4
[tex]\frac{4x}{4}=\frac{-4y}{4}[/tex]
Simplify
[tex]x= -y[/tex]
Substitute x as -y.
[tex]\begin{bmatrix}-4\left(-y\right)-4y=0\end{bmatrix}[/tex]
[tex]0=0[/tex]
The values of x and y are both zero.
Plz help me well mark brainliest if correct............?
Answers
Answer: 343
hope this helps
What is 2.6 * 10 ^ 5 written in standard notation? A. 26, 000 O B. 2, 060, 000 O C. 20,600 O D. 260, 000 O E. 2, 600, 000 O F. 206, 000
Answers
Answer:260000
Step-by-step explanation:
Suppose that a farmworker was making a banner for a march that has a length of 5x + 1 and a
width of 3 feet. If the area of the banner is equal to 33 square feet, what is the length of the
banner in meters? Round your answer to the nearest hundredth of a meter.
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Answer:
The length of the banner would be 11.00 meters.
Step-by-step explanation:
find the volume of this
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Please help quickly as possible thank you! :)
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Answer:
There are approximately 50 rooms in each floor
Step-by-step explanation:
Ms kim is ordering sets of place value blocks for the 3rd 4th and 5th graders. She wants one set for each student and there are 6 sets of blocks in a cartoon.How many cartons should ms kim order.
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Answer:
it depends on how many students there are in each grade.
What is the median of:
2, 8, 7, 8, 6, 15, 6, 8, 3
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Answer:
7
Step-by-step explanation:
To find the median, put all numbers into ascending order and work into the middle by crossing off numbers at each end. If there are a lot of items of data, add 1 to the number of items of data and then divide by 2 to find which item of data will be the median.
Answer: 7
Step-by-step explanation:
1. put them in order from least to greatest = 2, 3, 6, 6, 7, 8, 8, 8, 15
2. find the number in the middle = 7
Hope I helped, have an amazing day!!
15
Find the missing angle.
200
180
А A
100
B) 50
C 80
D) 70°
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Step-by-step explanation:
=> x + 80 + 20 = 180
=> x + 100 = 180
=> x = 180 - 100
=> x = 80°
Answer:
C. 80
Step-by-step explanation:
Triangle= 180
80 + 20 + x =180
x = 80
2 + 2 =
very easy beainliest :)
Answers
Answer:
4
Step-by-step explanation:
1+1+1+1=4
Answer:
wow, hardest question I've ever answered! It's either 4 or 22, I can't decide
Step-by-step explanation: