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3 years ago

a car uses an average of 6 litres of fuel per 100kilometres if the car uses 9 litres of fuel what is the distance covered?

Mathematics

1 answer:

babymother [125]3 years ago

5 0

Answer:

150 kilometres

Step-by-step explanation:

Imagine it as a ratio 6 : 100

If they have given you the first side which is 9 you need to figure out the other side (9 : ?)

To do this you simply need to figure out how you get from 6 to 9 which is times by 1.5

Then to find the other side you do the same as they are proportional to each other

So 100 times by 1.5 which is 150

This gives you the answer that you can travel 150 kilometres with 9 litres of fuel

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Scott is reading two books at the same time to prepare for a report he is writing. So far, he has read 407 of the total number o

Hitman42 [59]

Answer:

The system of equations are

x+y=557

$\frac35x+\frac56 y=407$

The total pages in shorter book is 245

The total pages in longer book is 312

Step-by-step explanation:

Given that,

Scott has read 407 of the total number of 557 pages, which $\frac35$ of the shorter book and $\frac56$ of longer book.

Total number of pages of shorter book be x and longer book be y.

Then,

$\frac35$ page of the shorter book $=\frac35 x$

$\frac56$ pages of the longer book = $\frac56y$

So, he has read $=\frac35x+\frac 56y$

Total number of pages of both book is = x+y

According to the problem,

x+y=557.........(1)

$\frac35x+\frac56 y=407$ .......(2)

We can write equation (2) as

$\frac35x+\frac56 y=407$

$\Rightarrow \frac{18x+25y}{30}=407$

$\Rightarrow {18x+25y}=407\times 30$

$\Rightarrow {18x+25y}=12,210$ ......(3)

Now 18 times of equation (1) subtract from equation (3)

18x+25y=12210

18x+18y=10026

- - -

_______________

25y-18y=12,210-10,026

⇒7y=2,184

$\Rightarrow y=\frac{2184}{7}$

⇒y= 312

Plug y=312 in equation (1)

x+312=557

⇒x=557-312

⇒x=245

The total pages in shorter book is 245

The total pages in longer book is 312

5 0

3 years ago

WILL GIVE BRAINLIEST

galina1969 [7]

I used substitution
The answer is a

3 0

3 years ago

The Harper family is traveling to visit friends. The distance to the friend’s house is 276.45 miles. It takes the family 5.82 ho

Leona [35]

Answer:

270.63

Step-by-step explanation:

hope you get it right

8 0

2 years ago

Read 2 more answers

Anyone know how to do this?

Novay_Z [31]

When you add 2pi to the angle, the amount is still the same. Therefore, you can make -17pi/4 positive by adding 6pi to it.

6pi + (-17pi/4)
= 24pi/4 - 17pi/4
= 7pi/4

8 0

3 years ago

Use substitution to solve the linear system of equations.

zzz [600]

5x - y = 15 (1)
-10x+2y=-30 (2)

multiply (1) by 2

10x - 2y = 30
-10x + 2y = -30 (2)
---------------------------add
0 = 0

answer
infinitely many solutions

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3 years ago

a car uses an average of 6 litres of fuel per 100kilometres if the car uses 9 litres of fuel what is the distance covered?​

a car uses an average of 6 litres of fuel per 100kilometres if the car uses 9 litres of fuel what is the distance covered?