Will give if correect Amelia heated 700 mL of solution. After a few minutes, 25% of the solution had evaporated. What quantity of solution remained?

175 ml

Step-by-step explanation:

you will have to multiply 700 by .25 as that is the rate that it's evaporating.

Usually "of" means to multiply

Therefore:

700 x 0.25 = 175

17 1/3

step-by-step explanation:

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