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allochka39001 [22]
3 years ago
10

Last year, Jina opened an investment account with $8200. At the end of the year, the amount in the account had decreased by 6.5%

How much is this
decrease in dollars? How much money was in her account at the end of last year?


HELP ——
Mathematics
1 answer:
adoni [48]3 years ago
5 0

Answer:

$250.69 maybe?

Step-by-step explanation:

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A=1/2(b_1 + b_2)h solve for h
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Step-by-step explanation:

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2 years ago
Suppose that 6 people sitting in a enclosed room are each generating about 400 BTUs of body heat per hour. If the room is 20 ft
Crazy boy [7]

Answer:  B) 4 BTUs/ft^3

Step-by-step:

For a cuboid of length L, width W and height H, the volume is:

V = L*W*H

In this case, we have:

L = 20ft

W = 15ft

H = 10ft

Then the volume of the room is:

V = 20ft*15ft*10ft = 3000 ft^3

Now we have 6 people, and each generate 400 BTUs per hour.

Then in total, they generate:

6*400 BTUs per hour

2400 BTUs per hour.

Now we want to find the BTUs per ft^3 produced in 5 hours.

Then if they generate 2400 BTUs per hour, in 5 hours they generate a total of:

5*2400 BTUs = 12000 BTUs

Now we take the quotient between the total BTUs and the volume of the room:

Q = (12000 BTUs)/(3000 ft^3) = 4 BTUs/ft^3

The correct option is B.

8 0
2 years ago
Sergei uses 4 cups of ice cream to make 3 milk shakes.
natta225 [31]

Answer:

He gets 2.4 cups. This is a case of inverse proportion

Step-by-step explanation:

Hope this helps! If you need extra info, just comment me for an explanation

PLEASE MARK AS BRAINLIEST! I WOULD APPRECIATE THAT

6 0
2 years ago
1 pts
balu736 [363]

9514 1404 393

Answer:

  $935.11

Step-by-step explanation:

The amount is given by the formula ...

  A = P(1 +r/n)^(nt) . . . P invested at rate r for t years compounded n per year

  A = $850(1 +0.024/2)^(2·4) = $935.11

The amount accumulated will be $935.11 after 4 years.

8 0
2 years ago
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