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3 years ago

What is the value of the expression? (-20)+(-10)+15

Mathematics

2 answers:

vesna_86 [32]3 years ago

7 0

The answer is -15 because -20 plus -10 is -15 and -30 plus 15 is -15

Mkey [24]3 years ago

3 0

Basically, you just do what comes first since just only the operation of addition. NOTE: This is important to remember! You read equations left from right.

1. -20 + -10 = -30
2. -30 + 15 = -15.

Your answer is -15!

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Katarina [22]

After 4 interval of six months, Joe to earn same hourly rate as Blaine

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Given that,

Amount earned by Joe = $ 14 per hour

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Lets assume the number of six month intervals be "x"

Joe receives a raise of $1.75 every six months

Therefore,

Joe earning: 14 + 1.75(number of six month intervals)

Equation for Joe earning: 14 + 1.75x ------- eqn 1

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Therefore,

Blaine earning: 18 + 0.75(number of six month intervals)

Equation for Blaine earning: 18 + 0.75x ------------ eqn 2

The number of six-month intervals it will take Joe to earn the same hourly rate as Blaine,

Eqn 1 must be equal to eqn 2

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