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san4es73 [151]
3 years ago
14

A motorist traveled 6km in 30 mins

Mathematics
1 answer:
olga_2 [115]3 years ago
6 0

6km in 30 min so he traveled at a speed of 12km per hour;

In 2 hours he will travel 24km;

12km in 60 min

9km in ? min

?=9x60/12=45 minutes will take to travel 9 km at the speed of 12km/h

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AlekseyPX

Answer:

improper fraction- 15/4

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Step-by-step explanation:

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In the equation, 1/4n+5=51/2 what is n equal to?
BlackZzzverrR [31]

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3 0
3 years ago
A graph has a constant of proportionality of 2.54. Let y represent centimeters and x represent inches. What is the unit rate of
Helga [31]

Answer: 2.54 is the rate of the given equation.

Step-by-step explanation:

Let x is the independent variable and y is the dependent variable.

Since, By the definition of proportionality,

y = k x

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y = 2.54 x

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3 0
3 years ago
Barry is 8 years older than his sister. In 3 years, he will be twice as old as she will be then. How old is each now?
Colt1911 [192]

Answer:

Step-by-step explanation:

Present age of Barry = b

Present age of sister = s

Barry is 8 years older than his sister means if we subtract 8 from present age of Barry both will be of equal age

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In 3 years means we have to add 3 in their present age

s+3=b+3

then

he will be twice as old as

2(s+3)=(b+3

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2s=b+3-6

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Put the value of s from (1) to (2), we have

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2b-16=b-3

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Present age of Barry = b = 13

Present age of sister = s = 5

7 0
3 years ago
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