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3 years ago

A student is trying to solve the system of two equations given below:

2 answers:

8 0

I would say B. By multiplying the first equation by -5, you create -5y. If you add that to the second equation, your cancelling out the 5y term, and get a new equation with only z and a constant.

grigory [225]3 years ago

5 0

Answer:

the answer is B

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Answering the questions would be rally nice

Oliga [24]

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3 years ago

M= 2n - 2 solve for n

jasenka [17]

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Step-by-step explanation:

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4 years ago

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Tom [10]

Answer:

-1/3

Step-by-step explanation:

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3 years ago

Read 2 more answers

Kenneth loaned $1,200 to his niece to buy a computer. Two years later, she paid him back the $1,200 along with an interest of $9

insens350 [35]

Answer:

The annual interest rate was 4%

Step-by-step explanation:

1. Let's review the data given to us for solving the question:

Loan to Kenneth's niece to buy a computer = US$ 1,200

Duration of the loan = 2 years

Niece paid back to Kenneth = US$ 1,296

Annual interest rate = x%

2. Let's find the annual interest rate after 2 years, using the following formula:

FV = PV * (1 + x)

PV = Loan to Kenneth's niece to buy a computer = US$ 1,200

FV = Niece paid back to Kenneth = US$ 1,296

rate (r) = x

Replacing with the real values:

1,296 = 1,200 * (1 + x)

1.296/1.200 = (1 + x) (Dividing by 1,200 at both sides)

1.08 = 1 + x

1.08 - 1 = x (Subtracting 1 at both sides)

0.08 = x

This is the interest rate for two years, for finding the annual interest rate we divide it by 2, this way:

0.08 / 2 = 0.04 * 100 = 4%

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3 years ago

4x-3=2x+7 algebraic form

raketka [301]

The correct answer is x=5

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3 years ago