Step-by-step explanation:
-7(-3r+2)=3r-6
Distribute the - 7
21r-14=3r-6
Add 14
21r=3r+8
Subtract 3r
18r=8
Divide 18r by 8
2.25 should be the answer to r.
Answer:
8x + 4y
Step-by-step explanation:
6x + 2x + y + 3y
Combine like terms
(6x + 2x) + (y + 3y)
8x + 4y
Answer:
The average rate of change is 3
Step-by-step explanation:
0 to 5 is 5 in difference then the change on the next one: 1 to 9 the difference is 8 so the change is 3 and it increases by three on the rest of them.
- (\) QueTooOfficial (/)
- <em>officially out of brainly retirement</em>
Hi there! The answer is B.
First we work out the parenthesis, which is easy because we can just remove them.
Now rearrange our expression (in order to collect terms later).
Next up is collecting the terms.
The answer is B.
~ Hope this helps you!
Answer:
b=-0.0019a + 215
at 2500 ft, b=210.25 degrees F
Step-by-step explanation:
First find the slope. a=altitude, b = temperature
slope is b2-b1 / a2-a1
points are (8200, 199.42) and (4700, 206.07)
(206.07 - 199.42) / (4700-8200)
= 6.65/ -3500
= - 0.0019
we have b = -0.0019a + intercept
plug in a point to find intercept
199.42 = -0.0019*8200 + intercept
intercept = 199.42 + 15.58 = 215
b=-0.0019a + 215
at a=2500 ft, substitute into equation
b= -0.0019*2500 + 215
= -4.75 + 215
= 210.25 degrees F
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