6ice cream cones cost $22.50. at this rate, how much do 2 ice cream cones cost?

$7.50

Step-by-step explanation:

Find the Unit Rate, definition of Unit rate find the cost of 1 icecream.

Set up a ratio 6:22.50

Divide both by 6 to get 1:3.75

So 3.75x2=7

10 glasses of juice could be made with 5 carrots, 1,500 orange juice, 2,000 papaya juice.

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