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monitta
3 years ago
10

Angela left for work at 8:30 a.m. She returned to school at 11:30 a.m. How long was Angela at work?

Mathematics
2 answers:
Dimas [21]3 years ago
8 0

Answer:

Angela was at work for 15 hrs.

nata0808 [166]3 years ago
7 0

Step-by-step explanation:

Since she was at work at 8:30 a.m and then she returned to school at 11:30 a.m she took 3 hours at work

11:30 a.m - 8: 30 a.m. = 3 hours of difference

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Read 2 more answers
Combine 2y+1x=40 and y=2x using substitution
fomenos

2(2x) + 1x = 40 or 4x + 1x = 40 is the result of combining by substitution

<em><u>Solution:</u></em>

Given that we have to combine 2y + 1x = 40 and y = 2x using substitution method

The substitution method for solving systems of equations involves expressing one variable in terms of another, thus removing one variable from an equation.

<em><u>Given equations are:</u></em>

2y + 1x = 40 -------- eqn 1

y = 2x ----------- eqn 2

We can substitute eqn 2 in eqn 1

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3 years ago
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