The temperature at 6:00 AM is −3° F. The temperature rises at a rate of 7° F per hour until it reaches a high of 32° F. How many hours does it take to reach this temperature? 1. 7h−3=32

2. 7h+3=32

3. −3h+32=7

4. −3h+7=32

answer: 42

use a calculator to find that 845/73 = 11.575

the whole part of the answer is 11. multiply this by 73 to get 11*73 = 803.

subtract that result from 845 to get 845 - 803 = 42

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft

you could deduce the conclusion directly using the facts pertaining to the specific situation.

hope this .