Each 1/2 CUP of milk has 4 grams of protein. Exactly how many grams of protein are in 3 1/2 cups of milk

28 grams

Step-by-step explanation:

Make a porportion

For every 0.5 cups of milk, there are 4 grams of protein

For every 3.5 cups of milk, there are x grams of protein

0.5/4=3.5/x

Cross multiply

0.5x=14

Divide by 0.5 on both sides

x=28

So, for 2.5 cups of milk, there is 28 grams of protein

Hope this helps!

they are simplified

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