Algebra

Absolute value of 3+18, -3-18

21

Simplify 12-3-0.5

8.5

17(5)=?(17)

5

Can the sum of two numbers be smaller than either of them?

Yes, when they are both negative or when one is negative and smaller in absolute value than the positive number.

+5.4-(-8.6)

14

-9(+27)

-243

Reciprocal of 5

1/5

A={1,2,3} C={1,3,4,6} A(Intersection)C

{1,3}

What quadrant is (-3,2) in

Quadrant II

7 times x in algebraic language

7x

A skateboard costs x dollars, A mountain bike is 5 time that price. Represent the mountain bike price in algebraic language

5x

Name all factors of 7mn

1, 7mn, 7, mn, 7m, n, 7n, m

Yesterday Alexander spent a minutes leisurely reading and 3a+10 minutes doing homework. Express his homework time in words and give a possible domain for a

Alexander spent 10 minutes longer than triple the time on his homework than reading, Set of whole numbers

y=0.5. Find 0.3y

0.15

Is x+10=14 an open sentence, true sentence, or algebraic expression

Open sentence

Write an expression for: The perimeter P of a rectangle is equal to the sum of twice its length l and twice its width w

P = 2l+2w

55=6a+7

a=8

(15x+7)-12=4

x=3/5

5c=28+c

c=7

P=4s, P=32

s=8

Solve for y: ry=s

y=s/r

Solve for r: P=br

P/b=r

-6<2, -6+(-4)?2+(-4)

-6+(-4)<2+(-4)