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MatroZZZ [7]
3 years ago
15

Find the simple interest for $3200 invested at 7% for 2 years.

Mathematics
1 answer:
Artemon [7]3 years ago
3 0

Answer:

$448

Step-by-step explanation:

First, converting R percent to r a decimal

r = R/100 = 7%/100 = 0.07 per year,

then, solving our equation

I = 3200 × 0.07 × 2 = 448

I = $ 448.00

USE THE EQUATION Interest= Principal x rate x time

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Tamar has four more quarters than dimes. If he has a total of $1.70, how many quarters
erma4kov [3.2K]
<h3>Answers:</h3><h3>6 quarters</h3><h3>2 dimes</h3>

================================================

Work Shown:

d = number of dimes

q = number of quarters

q = d+4 since she has 4 more quarters than dimes

$1.70 = 170 cents

10d = value of all the dimes in cents

25q = value of all the quarters in cents

10d+25q = total value of all the coins in cents

10d+25q = 170

10d+25( q ) = 170

10d+25( d+4 ) = 170 .... plug in q = d+4

10d+25d+100 = 170 .... distribute

35d+100 = 170

35d = 170-100 ..... subtract 100 from both sides

35d = 70

d = 70/35 ... divide both sides by 35

d = 2

He has 2 dimes

q = d+4

q = 2+4

q = 6

He also has 6 quarters

------------------

Check:

1 dime = 10 cents

2 dimes = 20 cents ..... multiply both sides by 2

1 quarter = 25 cents

6 quarters = 150 cents ..... multiply both sides by 6

(2 dimes) + (6 quarters) = (20 cents) + (150 cents) = 170 cents

This confirms the answers.

5 0
3 years ago
Mrs.Ramirez bought 2 qt of orange juice. If the juice is served in 6-oz glasses,how many glasses can be completely filled?
alekssr [168]
Hey there!

<span>There is 32 oz per qt. 2qts=64oz. Divide 64 by 6. </span><span> 6 goes evenly into 64 10 times with a remainder. So the answer is 10 glasses. 
</span>
Hope this helps!
4 0
3 years ago
in a survey, 15 high school students said they could drive and 15 said they could not. Out of 60 college students surveyed, 30 s
ELEN [110]
Not really, still one in every 2 people will be able to drive in college, the same as in highschool. They are mathematically equally likely! Hope that helps :)
8 0
3 years ago
Read 2 more answers
Roberto has 26% of
antiseptic1488 [7]

Answer:

407 Dollars

Step-by-step explanation:

550 x 0.26 = 143 dollars that he keeps, now we do 550 - 143 = 407, that gets withheld

7 0
3 years ago
The present shown below is a cube. Find the surface area of the present.
Verdich [7]

1350 (dont take my word for it, but i belive this is right)

5 0
3 years ago
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