5 - 2x^2 = -15 solve the question using inverse operations

x= √10 and x= -√10

Step-by-step explanation:

first look to isolate the term with the variable on one side

-5 +5 -2x² = -5 -15; subtract 5 from both sides(inverse of addition)

-2x² = -20; divide both sides by -2 (inverse of multiplication)

x² = 10; square root both sides (the inverse of raising to power of 2)

√x² =√10

x =±√10

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation: