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Evgen [1.6K]
1 year ago
12

Suppose that y varies directly with x and y3 when x = 9. What is y when x = 18? y = [?]

Mathematics
1 answer:
exis [7]1 year ago
8 0

Answer:

y=6

Step-by-step explanation:

y=kx

3=9k

k=3/9

k=1/3

y=kx

y=1/3 × 18

y=6

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What is the percent of increase from 8 to 10?
IceJOKER [234]

Answer:

25%

Step-by-step explanation:

difference between 8 and 10 is 2, so 8 would need to increase by 2 to get to 10.

2 is 1/4 of 8, and 1/4 is 25%

answer is 25%

8 0
3 years ago
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Find the x and y intercepts for the following equation. 2x– 7y=-14
Kisachek [45]

Answer:

C: Xint = 2, Yint. = -7

Step-by-step explanation:

Given the equation, 2x - 7y = -14:

The y-intercept is the point on the graph where it crosses the y-axis, and has coordinates (0, b). It is also the value of y when x = 0.  To solve for the y-intercept, set x = 0:

2x - 7y = -14

2(0) - 7y = -14

0 - 7y = -14

-7y = -14

Divide both sides by -7 to solve for y:

-7y/-7 = -14/-7

y = 2

Therefore, the y-intercept = 2.

Next, the x-intercept is the point on the graph where it crosses the x-axis, and has coordinates, (a, 0). To find the x-intercept, set y = 0 and substitute into the given equation:

2x - 7y = -14

2x - 7(0) = -14

2x - 0 = -14

2x = -14

Divide both sides by 2 to solve for x:

2x/2 = -14/2

x = -7

x-intercept = -7.

Therefore, the correct answer is C: Xint = 2, Yint. = -7

Please mark my answers as the Brainliest if you find this helpful :)

7 0
2 years ago
What is the slope of the line that passes through the pair of points?
Mazyrski [523]
I think the answer is going to be a
4 0
3 years ago
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⅛ ÷ 2<br><br><br><br><br> Please help! I need to remember this!
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Answer:

1/16

Step-by-step explanation:

6 0
3 years ago
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Determine which ordered pairs are solutions to the equation 3x+7y=21
mafiozo [28]

Answer:

(0,3) and (7,0) are solutions.

Step-by-step explanation:

In a pair of coordinates, they are always listed as (x,y). Since this is the case, you plug in each coordinate to their respective places.

For (0,3)

3(0) + 7(3) = 21

0 + 21 = 21

For (7,0)

3(7) + 7(0) = 21

21 + 0 = 21

To double check that (1,2) isn't a solution:

3(1) + 7(2) = 21

3 + 14 = 21

17 = 21 X

This doesn't work.

Marking as Brainliest is much appreciated.

7 0
3 years ago
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