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Thepotemich [5.8K]
3 years ago
7

Which numbers belong to the range of the revolution {(4,-1),(-7,2),(1,2),(2,1)}

Mathematics
1 answer:
Vedmedyk [2.9K]3 years ago
4 0
1.
The range are y's. The y's in {(4,-1),(-7,2),(1,2),(2,1)} are -1,1,2 ⇒ A,B,C

2.
The domain are x's. The x's in {(4,-1),(-7,2),(1,2),(2,1)} are -7,1,2,4 ⇒ A,B,D

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Natasha_Volkova [10]

Answer:

The amount invested in the mutual fund that earned 5% was $1,000

The amount invested in the mutual fund that earned 3% was $1,800

Step-by-step explanation:

Let

x ----> the amount invested in the mutual fund that earned 5%

y ----> the amount invested in the mutual fund that earned 3%

we know that

x+y=2,800 ----> y=2,800-x ----> equation A

5\%=5/100=0.05

3\%=3/100=0.03

0.05x+0.03y=104 ----> equation B

Solve the system by substitution

substitute equation A in equation B

0.05x+0.03(2,800-x)=104

Solve for x

0.05x+84-0.03x=104

0.05x-0.03x=104-84

0.02x=20

x=\$1,000

<em>Find the value of y</em>

y=2,800-x

y=2,800-1,000=\$1,800

therefore

The amount invested in the mutual fund that earned 5% was $1,000 and the amount invested in the mutual fund that earned 3% was $1,800

5 0
3 years ago
It takes a printer 10 hours to print the class schedules for all of the students in a college. A faster printer can do the job i
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Answer:

8 hours

Step-by-step explanation:

pretty sure

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Answer:

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Step-by-step explanation:

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You posted the question twice ... I have repeated the answer here .. .

Find the area of all the sides:
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3 years ago
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Answer:

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Step-by-step explanation:

5(x+4) ≥ 19

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5 0
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