Maria is buying ribbon for wrapping presents. a large present requires 7.25 feet of ribbon, a medium present requires 5.75 feet, and a small present
3.25 feet. if maria is wrapping 5 large presents, 9 medium presents, and one small present, how much ribbon will she need?
feet

91.25 ft

Step-by-step explanation:

do 5 times 7.25 = 36.25 ft

9 times 5.75 = 51.75ft

1 times 3.25 = 3.25ft

add alll them up to get 91.25 ft

a line is an defined derm because it

a)contains an infinite number of points b) can be used to create other geometric shapes c)describes something that does not have width or depth d) is a term that does not have a formal definition. a line is an undefined term because it: contains an infinite number of points.

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