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marin [14]
3 years ago
7

After 4 years aspen earned $510 in simple interest from a cd into which she initially deposited $3000. What was the annual inter

est rate if the CD
a) 13%
b) 11.75%
c) 4.25%
d) 8.5%
Mathematics
2 answers:
Alexeev081 [22]3 years ago
6 0
I = PRT...and since we are looking for r.....I / PT = R

I / PT = R
I = 510
P = 3000
T = 4

510 / (3000 * 4) =
510 / 12,000 =
0.0425 .....multiply by 100 to get the percent
4.25% <==
tiny-mole [99]3 years ago
4 0

Answer:

Annual interest rate is

c) 4.25%

Step-by-step explanation:

let amount deposited=P=$3000

time period=T=4 years

annual interest rate=R

Simple interest=I=$510

by the formula bof simple interest

  I=\dfrac{P\times R\times T}{100}\\ \\510=\dfrac{3000\times R\times 4}{100}\\\\R=4.25\%

hence, annual interest rate is 4.25%

hence option c) is correct

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A baseball team had 28 hime runs last year. This year they have 20 homeruns. What was the percent of change
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Answer:

28.57% drop

Step-by-step explanation:

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Change this year:

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Paint is sold in a cylindrical container with a radius of 4 inches and a height of 10 inches. If the paint costs $0.05 per cubic
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3 0
3 years ago
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Solve each system by elimination<br><br> 5x+y=9<br> 10x-7y=-18<br><br> -4x+9y=9<br> x-3y=-6
tiny-mole [99]
5x + y = 9....multiply by 7
10x - 7y = -18
----------------
35x + 7y = 63 (result of multiplying by 7)
10x - 7y = -18
----------------add
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x = 45/45
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solution is : (1,4)
=========================
-4x + 9y = 9
x - 3y = -6 ....multiply by 4
----------------
-4x + 9y = 9
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x - 3y = -6
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3 0
3 years ago
What is the area of a parallelogram with a base of 38 meters and a height of 12 meters?
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For this case we have by definition that the area of a parallelogram is given by:

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Substituting in the formula:

A = 38 * 12\\A = 456

The area of the parallelogram is A = 456 \ m ^ 2

Answer:

A = 456 \ m ^ 2

4 0
3 years ago
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