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Yuliya22 [10]
3 years ago
12

Petra invests $10,800. After 4 years she has earned $3240 in interest.

Mathematics
1 answer:
sweet-ann [11.9K]3 years ago
6 0

Answer:

Rate =interest*100/principal*time

Rate = 7.5%

Step-by-step explanation:

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The length of a rectangle is 12 in. and the perimeter is 56 in. find the width of the rectangle
pentagon [3]
The perimeter p of the rectangle with length l and width w is:
p = 2l + 2w
that is, two times its length and two times its width, lets solve for the width w and substitute known data:
<span>p = 2l + 2w
</span>2w = p - 2l
w = (<span>p - 2l</span>)/2
w = (56 - (2*12))/2
w = (56 - 24)/2
w = 32/2
w = 16
therefore the width of the rectangle is 16 in
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3 years ago
What is the rate of change for the points (0,3) and (2,7)
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2 right 3 up... hope this helped you
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Nadia built a robot to filter air and water efficiently she expects the robot to filter more than 343 liter of air and water whi
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Step-by-step explanation:

If she is able to achieve her aim, then the robot is very efficient, as it uses as low as 49 joules in filtering 343 litres of air and water.

It will now be a question of what time the robot is able to achieve this feat, if it is able to do it in a time that matches the quality of the work it does, then it will be reasonable to call the robot efficient, and fast too.

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3 years ago
Use synthetic division to find the expression for the area of the base of a rectangular prism with height x 4 and volume x3 2x2
IRINA_888 [86]

The expression for the area of the base of Prism is   x2 – 2x – 9

The volume of a rectangular prism is this

Volume = Area x Height

Substituting the given expressions

x3 + 2x2 - 17x - 36 = Area x (x + 4)

Area = (x3 + 2x2 - 17x - 36) / (x + 4)

Now, let's use synthetic division

-4 |    1    2    -17   -36

----    __-4___8___36

        1    -2     -9     0

The expression for the area is

Area = x2 - 2x - 9

Learn more about Synthetic Division:

brainly.com/question/14645972

#SPJ4

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2 years ago
Find the following differences:
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Answer:

1- 0.123

2- 0.0745

3- 0.9706

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