Toys r us is having a 38 percent discount on all of their backpacks if a back pack is normally 22.00 how much will it be on sale

answer:

i can not see the pic

step-by-step explanation:

answer:

d =   0

one real solution

step-by-step explanation:

given equation is :

4x²+20x+25=   0

general quadratic equation is ax²+bx+c =   0

the formula to find discriminant is :

d =   b²-4ac

if d =   0 then quadratic equation will have one real solution.

comparing given equation with general equation,we get

a =   4 , b=   20 and c =   25

putting above values in formula of discriminant,we get

d=   (20)²-4(4)(25)

d=   400-400

d=   0

if d =   0 then quadratic equation will have one real solution.

hence , given equation have one real solution.

answer: false

step-by-step explanation:

answer:

v =84.78 inches ^2

step-by-step explanation:

the volume of a cylinder is given by

v= pi *r^2 h

we know h= 12 inches

and r = 1.5 inches

v = pi * (1.5)^2 * 12

v = pi * 2.25*12

v = 27 pi

if we approximate by 3.14

v = 3.14 (27)

v =84.78 inches ^2