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fgiga [73]
4 years ago
14

Does anybody know how to do problem 3? It’s about systems of equations in the real world.

Mathematics
1 answer:
gayaneshka [121]4 years ago
5 0
Children: 367
adults: 550
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The simple interest will not always be less than the compound interest on a set of money borrowed.
vaieri [72.5K]

Answer:

False

Step-by-step explanation:

Simple interest is the percentage rate that a borrower pays to borrow money for a set period of time, whereas compound interest is calculated on top of what has already been borrowed, which means that as time passes, more and more interest charges accumulate until repayment begins. e. when a borrower pays interest on the principal plus interest charges that have accrued.

8 0
2 years ago
(b) Ali uses 11% of his $2345 to buy a television.
Fiesta28 [93]

Answer:

$257.95

Step-by-step explanation:

8 0
3 years ago
A steamer going downstream traveled the distance between two ports in 3 hours. The return trip took 3 hours 40 minutes. Find the
lapo4ka [179]

Answer:

1.8 mph

Step-by-step explanation:

Speed of the steamer in still water is 18 mph.

Speed of the current = x mph.

1. The steamer going downstream traveled the distance between two ports in 3 hours. Traveling downstream the current "helps" the steamer, then the speed is 18 + x mph.

The distance traveled downstream = 3(18 + x) miles.

2. The steamer going upstream traveled the distance between two ports in 3 hours 40 minutes that is 3\frac{2}{3} hours. Traveling upstream the current "interferes" the steamer, then the speed is 18 - x mph.

The distance traveled upstream 3\dfrac{2}{3}(18-x) miles.

3. The distances are the same, so

3(18+x)=3\dfrac{2}{3}(18-x)

Solve this equation:

3(18+x)=\dfrac{11}{3}(18-x)\\ \\9(18+x)=11(18-x)\\ \\162+9x=198-11x\\ \\9x+11x=198-162\\ \\20x=36\\ \\x=1.8\ mph

6 0
4 years ago
Identify the slope of the perpendicular line to the equation y= 3/5x +13
Vika [28.1K]

Answer:

-5/3

Step-by-step explanation:

Perpendicular lines have negative reciprocal slopes.

6 0
3 years ago
Help please!!! 10 points
lidiya [134]

Answer:

E

Step-by-step explanation:

You can easily solve this by rearranging the ones that look alike. 7a^2-5a^2+10a-3a=5a^2+7a

7 0
3 years ago
Read 2 more answers
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