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LenKa [72]
2 years ago
7

Find an equation of the line that has a slope of 9 and a y intercept of -2.

Mathematics
2 answers:
zmey [24]2 years ago
8 0

Answer:

y = 9x -2

Step-by-step explanation:

schepotkina [342]2 years ago
7 0

Answer:

y = 9x-2

Step-by-step explanation:

y=mx+c

slope (m) = 9

y-intercept (c) = -2

Therefore, an equation of the line =

y = 9x-2

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Simplify to create an equivalent expression<br><br> 6(5r-11)-(5-r)
dolphi86 [110]

Answer:

B or 31r-71

Step-by-step explanation:

First, use distributive property to expand the first term.

30r-66-(5-r)

Remove the parenthesis of the third term:

30r-66-5+r

Combine like terms

31r-71

7 0
3 years ago
Whitney kicks a football off the ground. The height, h , in feet, of the football above the ground after t seconds is given by h
malfutka [58]

Answer:

<em>after 4seconds</em>

Step-by-step explanation:

Given the height, h , in feet, of the football above the ground after t seconds expressed by h ( t ) = − 8 t^2 + 32 t, the height of the ball on the ground is 0feet.

Substitute h(t) = 0 into the expression and calculate t;

h ( t ) = − 8 t^2 + 32 t

0 = − 8 t^2 + 32 t

8t² = 32t

8t = 32

Divide both sides by 8

8t/8 = 32/8

<em>t = 4s</em>

<em>Hence the football hits the ground after 4seconds</em>

5 0
3 years ago
WILL MARK BRSINLIEST ANSWER IF GOTTEN RIGHT
Marianna [84]

Answer:

16.8km

Step-by-step explanation:

Arc length = 2πr(θ/360)

=2π(8)(120/360)

=16.7551608191

≈16.8km

8 0
3 years ago
Read 2 more answers
Find the measures of two angles, one positive and one negative, that are coterminal with the given angle. 240°
Olin [163]
One would be 240 + 360  = 600 degrees
and negative = 240-360  = -120 degrees
4 0
2 years ago
Read 2 more answers
-7p (p+8)=21 is equal to
andrew11 [14]

We have the equation:

-7p(p+8)=21

So then we need to distribute -7p to the parentheses:

-7p^{2}+(-56p)=21

Then we need to set the equation equal to 0, so we must subtract 21 on both sides:

-7p^{2}-56p-21=0

Then we need to factor this. So we end up with:

7(-x^{2}-8p-3)=0

This is as much as this can be factored, so <u>we cannot go any further</u>.

3 0
2 years ago
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