Insert Pictur Which answer represents a person burning 90 calories after
running 3 laps?
Laps
Calories Burned
Calories Bumed
1
30
5
150
10
300
Distance (laps)
C. A person who runs 1 lap will burn 20 calories
D. c = 0 + 90, where c represents the number of calories
burned and d represents the number
Need Help

answer is 67%

step-by-step explanation:

x = -2

y = 848

step-by-step explanation:

plug in the numbers

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15