What expressions are equivalent to 4^-2 times 7^-2. choose two answers

a. (4 times 7)^-4
b. 1/28^2
c. 7^-2/4^2
d. (4 times 7)^4

and z

Step-by-step explanation:

pigeon mayo

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

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a .4y4

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