ANSWER
The required angle is

EXPLANATION
Let the angle whose sine is

be

Then

We take the inverse sign of both sides to obtain,

We use our scientific calculator to evaluate and obtain,
54 = 15.
? = 5.
54 / 3 = 18.
18 minutes is spent on lunch.
Hope this helps.
How many ounces are in 1 quart?
Answer: 32ounces
Hope this helped.
The temperature of the air mass would be 5°C after it rises.
Air temperature drops 1°C for every 100 m it rises:
1/100 = x/500
Cross multiply:
500*1 = 100*x
500=100x
Divide both sides by 100:
500/100 = 100x/100
5 = x
The temperature will drop 5°; 10-5 = 5°C for the new temperature.
Answer:
a.) distributive property
b.) subtraction property of equality
c.) simplifying
d.) division property of equality
e.) simplifying