What are the solutions to the quadratic equation 3(x - 4)2 = 75?
cok
O
x= -9 and x = 1
x= -5 and x = 5
x= -4 and x = 4
x = -1 and x = 9

3(x-4)²=75 //:3

(x-4)²=25

(x-4)²-25=0

x²+x+9x-9=0

x(x+1)-9(x+1)=0

(x+1)(x-9)=0

x+1=0    x-9=0

x=-1     x=9

x=-1 and x=9

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. : )

1/4 and 8/3 because:

the reciprocal if 4 is 1/4 because 4 is used as 4/1 and the opposite of that is 1/4. the opposite of 3/8 is 8/3 so that is the answer.