30, 45, 60, 75, and 90 are the first five multiples of 15.
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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Answer:
2.37 x 10 ^ -5
Step-by-step explanation:
Answer:
c.1/4w+7
Step-by-step explanation:
1/2w+3 - (1/4w-4)
Distribute the minus sign
1/2w+3 - 1/4w +4
Get a common denominator for the fractions
2/4w - 1/4 w +3 +4
Combine like terms
1/4w +7