After 5 tests, her average was 88. To have a seven-test average of 90, the total must be:

Her average after 5 tests was 88. Her total score on the 5 tests is:

Subtract:

Find the average by dividing by 2:

Her average must be 95
Answer:
Step-by-step explanation:
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Answer:
its no solutions
Step-by-step explanation:
because u solve the 1st varibles in one of the equations,then subsitute the results into the other equations
You can do 4 to the second power and get 16
Answer:
thus, the ratios 8 : 16 and 6 : 12 are equal
Step-by-step explanation:
8 : 16 and 6: 12
8 : 16 = 1/2
6: 12= 1/2
Thus, the ratios 8 : 16 and 6 : 12 are equal