# 9th Algebra

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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?!?

• 9th Algebra -

2/5 - 7/8

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

= 16/40 - 35/40

= -19/40

• 9th Algebra -

7/20

• 9th Algebra -

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.

• 9th Algebra -

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

• 9th Algebra -

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

Corinne Moore

• 9th Algebra -

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

• 9th Algebra -

y=-2x^2-3

• 9th Algebra -

• 9th Algebra -

y=-2x^2-3

• 9th Algebra -

Put these numbers in order from least to greatest.
-
1
2
-
3
10
2
24
30
Submit

• 9th Algebra -

1223102430

• 9th Algebra -

Make an input-output table for the function use 0,1,2,3,4,5 as the x value.

Y=5(15-x)

• 9th Algebra -

Start with a numberX and 12,then divide by 4,next subtract7, and finally multiply by 2. a. convert the description to an algebraic expression. b.ifx=5,what is the value of the expression?