Answer:
7.9 X 10^3
standard form means it has to between 1 and 10
Step-by-step explanation:
sqrt of 81 is 9 so rational
Sqrt of 89 is irrational
Sqrt of 121 is 11 so rational
Sqrt of 131 is irrational.
Answer: -29.3
Step-by-step explanation: -7y + 2x
-7(-6.3) + 2(-7.4) = -29.3