If Cody has 13 quarters and nickels in his pocket, and they have a combined value of 205 cents, how many of each coin does he have? nickels

quarters

8 quarters, 1 nickel.

Step-by-step explanation:

xquarters+xnickels=13 (205 cents, $2.05)

8 quarters, 1 nickels.

8(0.25)=2+(0.5)

=2.05

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

answer:   rotate 270° clockwise about (7, 1) and reflect across the line x = 7

step-by-step explanation:

because i took test