30.
3/4 is equal to 75%, so take 75% of 40 by multiplying .75 by 40 to get 30
Step 
<u>Find the factors of each number</u>
we know that

Step 
<u>Find the greatest common factor (GCF)</u>
the GCF is equal to----------> 
therefore
<u>the answer is</u>
The GCF is 
Answer:
<em>170 </em>
<em />
Step-by-step explanation:
If the height is 3 times the radius you can find that by: 3r
r = 3.
So: 3 x 3 = 9
The height is 9 centimeters
Volume of a cylinder (can):

Plug in what we know

Rounds to: 170
Answer:
Step-by-step explanation:
42 < 21+3x < 84
21 < 3x < 63
7 < x < 21
Answer
What are the numbers
Step-by-step explanation: