Answer:
7
Step-by-step explanation:
4x-7=21
4x=28
x=7.....
Answer: 2g - 3
Explanation: not sure
Answer:
6.5 inches
Step-by-step explanation:
you would divide 65 by 10 feet to get the answer in inches which is 6.5
Answer:
5
Step-by-step explanation:
Original equation:

Divide both sides by 7

Rewrite in log

You can do mental math to realize this equals 5, or plug this into your calculate (if it allows you to set the base), but if you can't do either, you can use the change of base formula:

You get:

When you calculate using a calculator you should get 5
Step-by-step explanation:
4/10 or 2/5 *i'm sure :)