1. A weather forecaster says that the temperature is changing at a rate of -8° per hour. At this rate, how long will it take for
the temperature change to be -24°?
1 answer:
Answer:
2 hours
Step-by-step explanation:
8 x 2=24
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Width: W
length: L = 5W
Use the Pyth. Theorem to find the length of the diagonal:
|D| = sqrt(W^2 + [5W]^2) = sqrt(W^2 + 25W^2) = sqrt(26W^2), or
Wsqrt(26) (ans.)
Scale factor = 0.5 / 25 = 0.02 inches per foot
on scale drawing of the park the dimensuons will be 600 * 0.02 by 1000*0.02
= 12 inches by 20 inches
The double angle identities are
Then
The second identity together with the Pythagorean identity, 
, gives us another equivalent expression:
so
