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3 years ago

I need help with 7 (M + 5) = 21

Mathematics

2 answers:

emmainna [20.7K]3 years ago

8 0

Answer:

7(M+5)=21

or, 7M+35=21

or, 7M=21-35

or, 7M=-14

or,M=-14/7

or, M=-2

Nina [5.8K]3 years ago

7 0

Answer:

M = -2

Step-by-step explanation:

7 (M + 5) = 21

7M + 35 = 21

7M = 21 - 35

7M = -14

M = -14/7

M = -2

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3 years ago

Tanisha's mother buys 38 lemons. They know it takes 8 lemons to make 80 oz. of lemonade. Does Tanisha need more lemons? If not,

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3 years ago

Cindy has a salary of $880 per week and is paid every two weeks. She has the following deductions from each paycheck: Federal in

Nitella [24]

Answer:

244.80 If I'm not wrong.

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2 years ago

Pls help and show workings

andreev551 [17]

Answer: x = 11

Step-by-step explanation:

same as the last question, set them as equal and solve. here's my work:

5x - 1 = 4x + 10

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2 years ago

Robert borrowed $750 from his parents. He promised to repay the loan by giving his parents at least $67 from his paycheck each w

Luda [366]

To answer this question we can propose the following equation:

$d=750 -x(67)$

Where:

x is the number of weeks elapsed.

d is the debt depending on the weeks.

Robert promised to pay at least $ 67 each week.

Therefore, after 5 weeks the debt of rober should be:

$d\leq750-5*67$

$d\leq415$

Then scenario A) is possible because $150$ .

After 6 weeks:

$d\leq750-6*67$

$d\leq348$

Then scenario B) is possible because $200$ .

After 7 weeks

$d\leq750-7*67$

$d\leq281$

Then scenario C) is possible because $250$ .

After 8 weeks

$d\leq750-8*67$

$d\leq214$

So scenario D) is NOT possible because $300>214$

Finally the correct answer is option D.

3 0

2 years ago