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never [62]
3 years ago
11

2x + y - z=-7 5y- z=1 3z = 12 solve the 3x3 system

Mathematics
1 answer:
muminat3 years ago
8 0

Answer:

Step-by-step explanation:

3z = 12

z = 4

5y - 4 = 1

5y = 5

y = 1

2x + 1 - 4 = -7

2x - 3 = -7

2x = -4

x = -2

(-2, 1, 4)

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The total interest accrued is $2,407.41 if you invested $7,000 into a money market account for 10 years at an annual interest rate of 3%.

<h3>What is invested amount?</h3>

An investment is a payment made to acquire the securities of other firms with the intention of making a profit.

We are assuming the interest will be compounded annually

\rm A = P(1+\dfrac{r}{n})^{nt}

Where A = Final amount

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We have:

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After calculating:

A = $9407.41

I = A - P = 9407.41 - 7000 = $2,407.41

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Learn more about the invested amount here:

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