Question

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Problem 1: Evaluate each expression below. (You can take a picture your work and upload to this slide)


B. -0.3(4+(-1.6))-6 ½

Answer 1

=

107/135

(Decimal: 0.792593)

Explanation:

Answer 2

a. 19/20

B. -5.78

Explanation:

Dividing by a fraction is the same as multiplying by its reciprocal. i.e.
`(-(2)/(3) )/(-(8)/(9) ) =-(2)/(3) *-(9)/(8) = (3)/(4)` to add to 1/5, change both denominators to 20.

`(3)/(4) * (5)/(5) = (15)/(20)`

`(1)/(5) *(4)/(4) =(4)/(20)`

`(15)/(20) +(4)/(20) = (19)/(20)`

B. Convert all to decimals, then work from the inside out because of the parentheses. -1.6 + 4 = 2.4, 2.4(-0.3) = -0.72, -0.72 - 6.5 = -5.78