Select all the expressions that cannot be factored using integral coefficients and integral constants. 6 x2 - 2 x - 20 x2 - 2 x - 4 25 x2 - 40 x + 16 2 x2 + x + 4

The expressions that cannot be factored using integral coefficients and integral constants is the below:

d. 2x2 + x + 4

b. x2 - 2x - 4

For c. 25x2 - 40x + 16 the factors are (5x – 4) (5x – 4)

For a. 6x2 - 2x - 20 the factors are (2x - 4) (3x + 5)

she played for 18.75 hours.

step-by-step explanation:

if she played 2/4 of a hour on tuesday. and there is 60 minutes in an hour and 60 divided by 4 is 7.5. and she played 2/4 of an hour on thursday then again 60 divided by 4 is 7.5, you add 7.5+7.5=56.25. now you have to do 1/4 of an hour, it equals 3.75. now you have to add them all up. 3.75+7.5+7.5=18.75

i hope this and i hope you get it right. it took me a while to get this done for you. : )

r(0,90)(x,y) . t(-5,0)

last option

step-by-step explanation:

∆def to ∆d"e"f"

- rotate 90 counterclockwise degrees

- then translated 5 to the left (x --> x - 5)

answer is the last option