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katovenus [111]
2 years ago
15

Alvarez has $650 deposited into his bank account. The account earns simple interest of 5. 5% per year. No other money is added o

r withdrawn from the account for a period of four years. What is the total amount of money in the account after four years?
Mathematics
1 answer:
Elena-2011 [213]2 years ago
4 0

Answer:

  $793

Step-by-step explanation:

The amount of money in an account earning simple interest is given by the formula ...

  A = P(1 +rt)

where P is the principal invested at rate r for t years.

__

Using the values given in the problem statement, the account balance can be found to be ...

  A = $650(1 +0.055×4) = $650×1.22 = $793

There will be $793 in the account after 4 years.

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The larger of the two positive numbers is 8 more than the smaller. The sum of their squares is 104. Find the two numbers.
poizon [28]

Hey there!

Let's set up a system of equations to find our answer. We will use x and y, with y being the larger 1.

y=x+8

x²+y²=104

We plug our value for y into the second equation and we get that y is equal to two. We can then plug this into the first equation and we get 10.

Our two numbers are two and ten.

I hope this helps!

Let's plug our y value into the second equation.

x²+x²+64=104

4 0
3 years ago
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balandron [24]
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3 years ago
5(x-4)=7x<br><br> ik its easy just very confused
Dahasolnce [82]

Answer:

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Step-by-step explanation:

Step 1:

5 ( x - 4 ) = 7x       Equation

Step 2:

5x - 20 = 7x       Multiply

Step 3:

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Step 4:

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Answer:

x = - 10

Hope This Helps :)

5 0
3 years ago
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motikmotik
<span>A) 2x -5y +z = 1
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Those 3 equations you typed were somewhat squished together.
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</span>
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