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a_sh-v [17]
2 years ago
8

1/3(6z+7.2)=0.5(8z+2)-0.4 please hurry this is for now

Mathematics
1 answer:
Crazy boy [7]2 years ago
3 0

Answer:

z = - 0.78

Step-by-step explanation:

Given:

1/3(6z+7.2)=0.5(8z+2)-0.4

Open parenthesis

2z + 2.4 = (4z + 1) - 0.4

2z + 2.4 = - 1.6z - 0.4

Collect like terms

2z + 1.6z = - 0.4 - 2.4

3.6z = -2.8

z = -2.8 / 3.6

= - 0.78

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Let the amount invested with 5% interest be x

Therefore, the amount invested with 6% interest will be (6000-x)

It is given that the total interest earned yearly is $337.5. Thus, the equation of interest will be:

\frac{5}{100}x+\frac{6}{100}(6000-x)=337.5

Multiplying both sides by 100 we get:

5x+6(6000-x)=33750

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Subtracting both sides by 36000 we get:

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Thus, the amount invested at 5% is $2250

Therefore, the amount invested at 6% will be $(6000-2250)=$3750

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Step-by-step explanation:

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andreyandreev [35.5K]

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Step-by-step explanation:

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I think the answer is A.

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