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algol [13]
3 years ago
9

7th-grade equation math. Will give brainiest.

Mathematics
1 answer:
vovangra [49]3 years ago
7 0

Answer:

x = 14

Step-by-step explanation:

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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

0.16x = 320

x = 2000

5 0
3 years ago
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7/3(x+9/28) what is the answer
natulia [17]

Answer:

x= - 9/28 ± √60/7

Step-by-step explanation:

8 0
2 years ago
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One book costs $2.98 how much does four books cost
Nuetrik [128]

2.98x4 
$11.92.................
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3 years ago
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What is the value of y in the equation 4(5y − 8 − 2) = 185 − 15? 8. 5 9. 7 10. 5 42. 5.
Bezzdna [24]

Answer:

10.5 is the answer

Step-by-step explanation:

4(5y−8−2)=185−15

(4)(5y)+(4)(−8)+(4)(−2)=185+−15(Distribute)

20y+−32+−8=185+−15

(20y)+(−32+−8)=(185+−15)(Combine Like Terms)

20y+−40=170

20y−40=170

20y−40+40=170+40

20y=210

20y/20=210/20

y=21/2

y=10.5

6 0
2 years ago
John bought a new car for $22,000. He kept track of the value of the car
sasho [114]

Answer:

what is the options

Step-by-step explanation:

3 0
3 years ago
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