Answer:
C
Step-by-step explanation:
I took the test
Answer:-23/5
Step-by-step explanation:
-3/5-8/2
-3/5-4
-3+20/5
-23/5
Answer:
a=7.85-1/2^b
Step-by-step explanation:
2a=15.7-b Move variable to the right side and change its sign
2a=15.7-b Divide both sides of the equation by 2
a=7.85-1/2^b The final solution for a is
Answer:

Step-by-step explanation:
We have the different denominators.
The common denominator is 10.

We can subtract these fractions now.

Answer:its number 3
Step-by-step explanation: