10th grade class 1

what is the result of -8+13

• -21

• 5

• -5

• 21

which number is the additive inverse of -9

• 9

• 0

• -1

• -9

what is the result of multiplying two negative integer?

• positive

• zero

• negative

• undefined

which of the following is a rational number?

• √2

• π

• ¾

• √3

what is 2/5 + 3/10

• 5/15

• 7/10

• 1/2

• 5/10

which of the following is not a rational number?

• -1.25

• √7

• 2/3

• 4

simplify: 3x+5+2x+7

• 5x+12

• 6x+2

• 5x+2

• 5x-2

which set does the number -3/2 belong to?

• Only rational

• Irrational

• Rational and real

• Integer

what is the value of the expression 2(x-3)+4x when x=2

• 4

• 6

• 8

• 2

what is the result of (a-b)²

• a²+b²

• 2a²+b²

• a²+2ab+b²

• a² -2ab+b²