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djyliett [7]
3 years ago
7

Plz help i'll give brainlest!

Mathematics
2 answers:
Vitek1552 [10]3 years ago
4 0

The teacher use the percent of she will multiply. Hope this helps :)

Sphinxa [80]3 years ago
3 0

Selecting the sample means choosing the group you will study. In this case, the teacher is studying the class. He or she will measure the entire class and then the number of students who play chess.

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If a person invested half of her money at 9% and half at 7% and received $160 interest, find the total amount of money invested.
mr Goodwill [35]

Answer:

$2000

Step-by-step explanation:

let x be the money she invested

lets assume this was for 1 year

0.09(x/2) + 0.07(x/2) = 160

multiply each side by 2 to cancel the denominators:

0.09x + 0.07x = 320

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x = 2000

5 0
3 years ago
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Xelga [282]

Hi!


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3 0
3 years ago
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Vladimir79 [104]

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