A banana weighs \dfrac38\text{ kg} 8
3
​
kgstart fraction, 3, divided by, 8, end fraction, start text, space, k, g, end text. An apple weighs \dfrac23\text{ kg}
3
2
​
kgstart fraction, 2, divided by, 3, end fraction, start text, space, k, g, end text.
Determine a reasonable estimate for the weight of both fruits.

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

it shoild be o

step-by-step explanation: