30 and 13
x-y=17 and x+y=43
x=17+y and x=43-y, so 17+y=43-y
so y=13
43-13=30, so x=30 and y=13
Answer:
x=45
Step-by-step explanation:
2x-56=34
Add 56 to both sides
2x-56+56=34+56
Simplify;
2x=90
Divide both sides by 2
2x/2=90/2
Simplify;
x=45
She would have to score atleast a 74 on the test for her average to be 78
So what are we trying to find the reduced fraction or inverse operation
Answer:
Step-by-step explanation:
42:7=ED:24
cross multiply 42 into 24.
Then divide by 7
you will get ED
Then use pythageorous theorem.
Ed square + 42 square=Ef square
Then do square root of Ef square
