Answer:13
Step-by-step explanation:
13^2
<1=97°
steps:
<1+83=180 co interior angle
<1=180-83=97°
Answer:
a. 
b. 
Step-by-step explanation:
a.


Where, 


Where, 

Volume of the shaded figure = 
b.
expressed in factored form:
Look for the term that is common to 9a³ and 9ab², then take outside the parenthesis.

Distance = speed x time
time = distance/speed
= 340/85
= 4h