3 years ago

If y=15 when x=2, find y when x=8

Mathematics

1 answer:

LenKa [72]3 years ago

3 0

8 ÷ 2 = 4
4× 15 = 60
y = 60

You might be interested in

Construct a linear equation for the linear data presented in the table

yaroslaw [1]

Answer:

y = -7x

Explanation:

Take two points from table: (-4, 28), (-3, 21)

Find slope:

$\sf slope: \dfrac{y_2 - y_1}{x_2- x_1} \ \ where \ (x_1 , \ y_1), ( x_2 , \ y_2) \ are \ points$

$\rightarrow \sf slope\ (m): \dfrac{21-28}{-3-(-4)} = -7$

Now find equation:

$\sf y - y_1 = m (x - x_1)$

$\rightarrow \sf y - 21 = -7(x - (-3))$

$\rightarrow \sf y = -7(x +3) + 21$

$\rightarrow \sf y = -7x -21 + 21$

$\rightarrow \sf y = -7x$

5 0

2 years ago

Read 2 more answers

Find abc !!!!!!!! !!!!!

KonstantinChe [14]

Answer:

58 degreess

3x+11=4x-5

-3x -3x

11=x-5

+5 +5

16=x

x=6

3(6)+11

18+11

29*2

Step-by-step explanation:

8 0

2 years ago

Use the diagram shown. If BC = 14, AB = 11, and the perimeter of triangle ABC is 39, then what is the value of BD?

RUDIKE [14]

Answer:

BD=5.5

Step-by-step explanation:

11 divided by 2 gives you the answer

7 0

3 years ago

I need help with my geometry work please.

cricket20 [7]

Answer:

Step-by-step explanation:

The steps are F and H are matched with line marking it congruent and G is vertical and the last is congruent.

5 0

3 years ago

the diameter D of a sphere is 13m calculate the sphere volume V use the value 3.14 round your answer to the nearest tenth

fgiga [73]

Answer:

1149.8 m³

Step-by-step explanation:

The volume (V) of a sphere is calculated as

V = $\frac{4}{3}$ πr³ ( r is the radius )

Here diameter = 13, thus radius = 13 ÷ 2 = 6.5

V = $\frac{4}{3}$ × 3.14 × 6.5³

= $\frac{4}{3}$ × 3.14 × 274.625

= $\frac{4(3.14)(274.625)}{3}$ ≈ 1149.8 m³ ( to the nearest tenth )

5 0

3 years ago