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Ulleksa [173]
2 years ago
10

Eric is 8 years 4 months old. his mother is 40 years 3 months old. how old was his mother when eric was born?

Mathematics
1 answer:
Radda [10]2 years ago
8 0

Answer:

Eric´s mom had:

31 years 11 months

Step-by-step explanation:

1 year = 12 months

40 years = 39 years + 12 months

40 years 3 months = 39 years + 12 monts + 3 monts = 39 years 15 months

Then:

 40 years 3 months

-   8 years 4 months

it´s equivalent to:

 39 years 15 months

-   8 years  4 months

= 31 years  11 monts

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Stella [2.4K]
AB=6 but DE=2(AB) so DE=2(6)=12

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3 years ago
For a club gathering you were having, you bought a total of 50 burgers, and spent $90. You paid $2 per turkey burger, and $1.50
Sedaia [141]

Answer:

<u></u>

  • <u>No. You would have to cut the number of veggie burgers in more than half.</u>

Explanation:

<u>1. Model the situation with a system of equations</u>

<u />

<u>a) Name the variables:</u>

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<u />

<u>b) Number of burgers:</u>

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<u>c) Cost of the 50 burgers:</u>

  • $90 = 2t + 1.50v

<u>2. Solve that system of equations:</u>

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<u>a) System</u>

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<u>b) Mutliply the first equation by 2 and subtract the second equation</u>

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  •  90 = 2t + 1.50v

  • 10 = 0.5v
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<u>c) How much would you spend if the next year you buy the double of 20 turkey burgers (40) and the half of 30 veggie burgers (15)</u>

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Then, you if you double the number of turkey burgers, and cut the number burgers in half, you would spend more than $90 ($102.50).

6 0
3 years ago
A combination lock uses three numbers between 1 and 78 with​ repetition, and they must be selected in the correct sequence. whic
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"Permutation lock" would be a more appropriate name.

8 0
3 years ago
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Dafna1 [17]

Answer:

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Answer:

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