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Alex777 [14]
2 years ago
15

Can you solve it, please

Mathematics
2 answers:
weeeeeb [17]2 years ago
8 0

Answer:20

Step-by-step explanation:

3.1 *4.2=13.02 12.4*21=260.4 260.4/13.02=20

GREYUIT [131]2 years ago
3 0

Answer:

247.38

Step-by-step explanation:

21x12.4=260.4

4.2x3.1=13.02

260.4-13.02=247.38

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Answer:

2.4

Step-by-step explanation:

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3 years ago
Solving systems of Equations Word Problems - CLASSWORK
dem82 [27]

Answer:

Part A) For the number of hours less than 5 hours it make more sense to rent a scooter from Rosie's

Part B) For the number of hours greater than 5 hours it make more sense to rent a scooter from Sam's

Part C) Yes, for the number of hours equal to 5 the cost of Sam'scooters is equal to the cost of Rosie's scooters

Part D) The cost is $90

Step-by-step explanation:

Let

x-------> the number of hours (independent variable)

y-----> the total cost of rent scooters (dependent variable)

we know that

Sam's scooters

y=8x+30    

Rosie's scooters

y=10x+20

using a graphing tool

see the attached figure

A. when does it make more sense to rent a scooter from Rosie's? How do you know?

For the number of hours less than 5 hours it make more sense to rent a scooter from Rosie's  (see the attached figure) because the cost in less than Sam' scooters

B. when does it make more sense to rent a scooter from Sam's? How do you know?

For the number of hours greater than 5 hours it make more sense to rent a scooter from Sam's  (see the attached figure) because the cost in less than Rosie' scooters

C. Is there ever a time where it wouldn't matter which store to choose?

Yes, for the number of hours equal to 5 the cost of Sam'scooters is equal to the cost of Rosie's scooters. The cost is $70 (see the graph)

D. If you were renting a scooter from Rosie's, how much would you pay if you were planning on renting for 7 hours?

Rosie's scooters

y=10x+20

For x=7 hours

substitute

y=10(7)+20=90

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4 0
3 years ago
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Answer:

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Step-by-step explanation:

4 0
4 years ago
Read 2 more answers
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dexar [7]
She was 22 when she had triplets
so if the triplets are 12 then just add 
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or when she had Mia she was 18
if Mia is 16 then add
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Also, she had another child at 23
if the child is 11 then add
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3 0
3 years ago
Read 2 more answers
Which number can each term of the equation be multiplied by to eliminate the fractions before solving
zhuklara [117]

Answer:

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Step-by-step explanation:

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This corresponds to answer D.

4 0
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