Im in 9th grade algebra. and we are learning adding and subtracting real numbers. im stumped on a couple of problems. I get confused when i see the absolute value lines. Does that change the munber? Do i just go on with the problem as if they werent there?

And i have NO idea how to do 2/5 - 7/8?!?

2/5 - 7/8

= 2*8/5*8 - 7*5/8*5

= 16/40 - 35/40

= -19/40

7/20

1. find the latreal area of a cylinder of revolution if its altitude is 5.5 inches and the diameter of its base is 7 inches.

idk im in 9H soo idc either i juss need my ? answered duhhh!!!!! y else wouldi b here

what is 10 to the second power in standard form? Please answer by the end of today. Please and Thank You

Corinne Moore

O and btw im in 8H buhh its high skool work so yahh Earth Sci all that good stuff

Corinne Moore

y=-2x^2-3

Quadratic functions quest

y=-2x^2-3

Put these numbers in order from least to greatest.

-
1
2
-
3
10
2
24
30
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