What value make this sentence true 8 + ___ = 15 + 2

9

Step-by-step explanation:

8 + ___ = 15 + 2

Combine like terms

8 + ___ = 17

Subtract 8 from each side

8-8 + ___ = 17-8

___ = 9

9 is the number we need to fill in the blank

3/4 ÷ 3/4

step-by-step explanation:

basically divide any proper fraction with itself to fit the criteria.

so if we are using 3/4, then:

3/4 ÷ 3/4 = 1

so 1 is the quotient.

and the numerators for both these fractions is 3.   and if we divide the numerators:

3 ÷ 3 = 1

we see that quotient is equal to our original quotient as well.

$54.99

step-by-step explanation:

$54.99 includes 500 min. if she does not exceed 500 min then her bill is $54.99