Answer:
B
Step-by-step explanation:
If 5 is the radius, then we need to multiply by 2 to get the diameter.
10 is the diameter.
Multiply by pi to get your answer
10pi is 31.4.
B-31.4.
Hope this helped!
1. A
2. C
3. C
4. A
I’m not so sure about number 4 tho!!
Just cross multiply basically divide
$9.78=100%
$9.65=?
9.65*100/9.78
=98.67%
%decrease=100%-98.67%
=1.33%
=1.3%
Well, you want to solve for a. You first add the 4 to both sides.
3a-4<5
3a<9
Then you want to get a by itself so you divide both sides by 3. Since the 3 is positive you don't have to worry about switching the sign. It stays this way <
After you divided both sides by 3 you get a<3
