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8_murik_8 [283]
2 years ago
11

Lily drives 90 miles in 2 hours. If she drives at the same rate, how far does lily travel in each of the following time interval

s: 1 hour, 1/2 hour, and 3 hours? Please solve in at least two different ways. You could make a bar model, double number line, ratio table, or graph
How far does she drive in 3 hours
Mathematics
2 answers:
kakasveta [241]2 years ago
5 0

Answer:

1 hour= 45 miles

1/2 hour=22.5 miles

3 hours= 135

Step-by-step explanation:

just work out one hour by halving 90 miles which is 45. Then work out the rest by halving again and multiplying by 3.

jek_recluse [69]2 years ago
3 0

Answer:

1st way:

90/2=45

1 hour = 45 miles

45/2=22.5

0.5 hour = 22.5 miles

45+22.5=67.5

1.5 hour = 67.5 miles

67.5x2=135

3 hours = 135 miles

2nd way:

90 miles - 2 hours

1 hour - 60 minutes

60x2=120

90/120=0.75

1 minute - 0.75 miles

0.75x60=45

1 hour = 45 miles

60:2=30

60+30=90

0.75x90=67.5

1.5 hour = 67.5 miles

60x3=180

0.75x180=135

3 hours = 135 miles

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Answer:

Step-by-step explanation:

follow the Pemdas order of operations

add and subtract (left to right)

apply the rule +(-a)=-a

+(-78)=-78

=54-78-(-39)

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apply the rule -(-a)=+a

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1 year ago
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Find an equivalent ratio in simplest terms:<br> 15 : 72
maksim [4K]

Answer:

5:24

Step-by-step explanation:

15:72

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5:24

7 0
2 years ago
At Acme Inc., there are 3 more than twice as many salespeople as inventors. If the whole company has 27 employees,
Olenka [21]

Answer:

There are 8 inventors.

Step-by-step explanation:

  • Let 's' be the salesperson
  • Let 'i' be the inventors

Given that there are 3 more than twice as many salespeople as inventors.

  • i.e s = 3+2i

Also given that the whole company has 27 employees.

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s + i = 27

substituting s = 3+2i

3 + 2i + i= 27

3 + 3i = 27

3i = 27 - 3

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divide both sides by 3

i = 8

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<u>VERIFICATION</u>

As the total number of employees is 27.

so the salespeople will be:

s = 3+2i

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Thus, the total employees are verified as:

s + i = 27

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2 years ago
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harkovskaia [24]

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