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OLga [1]
3 years ago
15

A car leaves town, A at the speed of 90 km/h. Three hours later leaves the same city another car in pursuit of the first with a

speed of 120 km / h. How much time will take to reach it?
Select the appropriate response:
A) t = 6hrs
B) t = 12 hrs
C) t = 30 min
D) None of the answers are correct
Mathematics
2 answers:
Mumz [18]3 years ago
6 0

Answer:

d

Step-by-step explanation:

never [62]3 years ago
5 0

Answer:

D) None of the answers are correct

Step-by-step explanation:

Let t be the time since the first car leaves

Distance of first car:

90t

Distance of second car:

120(t - 3)

90t = 120(t - 3)

90t = 120t - 360

360 = 30t

t = 12

The second car takes 12-3 = 9 hours to reach it

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5% of the toddlers in a preschool class drink water with their lunch. How many toddlers are in the class if 3 drink water with t
OLga [1]

Answer:

<u>There are 60 toddlers in the preschool class</u>

Step-by-step explanation:

1. Let's review the information provided to us to answer the question correctly:

Percentage of the toddlers in a preschool class drink water with their lunch = 5

Number of the toddlers in a preschool class drink water with their lunch = 3

2.  How many toddlers are in the class?

We'll solve the question, using the Direct Rule of Three, this way:

Percentage      Toddlers

      5                       3

    100                     x

*******************************

5x = 3 *100

5x = 300

x = 300/5

x = 60

<u>There are 60 toddlers in the preschool class</u>

6 0
3 years ago
Please help with this question! i'm really struggling :(
Dmitriy789 [7]

Answer:

Step-by-step explanation:

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Help please! Will give brainlest!
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The answer is 17/22 17/20 because of the fractions
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Read 2 more answers
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