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alexira [117]
2 years ago
6

A student factors 15c2 + c – 28 to the following.

Mathematics
2 answers:
Mamont248 [21]2 years ago
7 0

Answer:

C. The expression is not equivalent, but it is completely factored.

dmitriy555 [2]2 years ago
7 0

Answer:

C

Step-by-step explanation:

when we factored the expression 15c2 + c – 28

= 15c2 + 21c-20c – 28

=3c(5c+7c)-4(5c+7c)

=(3c-4)(5c+7c)

hence the given expression is not equivalent, but it is completely factored.

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wlad13 [49]

Brad have 19 quarters and 27 nickels.

Step-by-step explanation:

Given,

Total worth of nickels and quarters = $6.10 = 6.10*100 = 610 cents

One quarter = 25 cents

One nickel = 5 cents

Let,

x represent the number of quarters.

y represent the number of nickels.

According to given statement;

25x+5y=610     Eqn 1

y = x+8              Eqn 2

Putting value of y from Eqn 1 in Eqn 2

25x+5(x+8)=610\\25x+5x+40=610\\30x=610-40\\30x=570

Dividing both sides by 30

\frac{30x}{30}=\frac{570}{30}\\x=19

Putting x=19 in Eqn 2

y=19+8\\y=27

Brad have 19 quarters and 27 nickels.

Keywords: linear equation, subtraction

Learn more about subtraction at:

  • brainly.com/question/9369548
  • brainly.com/question/9328925

#LearnwithBrainly

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2 years ago
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agasfer [191]
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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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