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sattari [20]
3 years ago
5

Solve 3^2x-5=81 Please show work

Mathematics
1 answer:
Strike441 [17]3 years ago
5 0
Let's solve your equation step by step
(3^2)(x)-5=81
step 1:simplify both sides of the equation
(3^2)(x)-5=81
simplify.
9x-5=81
step 2:Add 5 to both sides.
9x-5+5=81+5
9x=86
divide both sides by 9.
9x/9=86/9
x=86/9
Answer:86/9

Hope this helps!
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Answer: 1.1%

Step-by-step explanation:

To get a percentage you want to divide the ending number by the base number

73 / 68 = 1.07

It says to round to the neartest tenth, when rounding if the number is 5 or above you round up, if under 5 your number stays the same

7 is higher than 5 so we round up

1.1%

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A certain college graduate borrows 5510 dollars to buy a car. The lender charges interest at an annual rate of 17%. Assuming tha
Diano4ka-milaya [45]

Answer:

His annual payment rate required to pay off the loan in 7 years is k = $2362.41 a year.

He has to pay $11026.85 in interest

Step-by-step explanation:

The first step to solve this problem is find how much the student will have to pay for the car. So, we have to find how much the present value of the car(in $) will be worth in 7 years. This is a compound interest problem:

The compound interest formula is given by:

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

Where A is the amount of money, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per unit t and t is the time the money is invested or borrowed for.

In this exercise, we have:

A = The value we want to find

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So

A = 5510(1 + \frac{0.17}{1})^{7}

A = $16536.85

In a seven year period, he has to pay $16536.85. Per year, he has to pay a rate k of:

k = \frac{16536.85}{7} = $2362.41

His annual payment rate required to pay off the loan in 7 years is k = $2362.41

How much does he pay in interest?

His loan is $5510 and he has to pay $16536.85. So, in interest, he has to pay 16536.85 - 5510 = $11026.85

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3 years ago
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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: Have a nice day! ✌️

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