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2. Equations & Inequalities > 2.05 Practical problems with equations
:
Eileen's bathtub can be filled in 18 minutes and can subsequently be drained in 19 minutes when it is unplugged. Find the number of
minutes, n, that it will it take to fill the bathtub if it is left unplugged while being filled.

11 feet 6 inches and 8 feet 6 inches

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

3/20

step-by-step explanation:

well, there are 20 outcomes, and 3 of them you want. so, 3/20

hi do you need an answer for your question?

step-by-step explanation: