All categories

3 years ago

MINING A mine produces 42.5 tons of coal per hour. How much coal will the mine produce in 9.5 hours?

Mathematics

2 answers:

vladimir1956 [14]3 years ago

7 0

Given

MINING A mine produces 42.5 tons of coal per hour.

Find out the how much coal will the mine produce in 9.5 hours.

To proof

As given in the question

A mine produces 42.5 tons of coal per hour i.e in the 1 hour mine produces the 42.5 tons .

Let us assume that the coal produce in the 9.5 hours be x.

than the equation becomes

x = 9.5 × 42.5

x = 403 . 75 tons

403 . 75 tons coal will the mine produces in the 9.5 hours.

Hence proved

lisabon 2012 [21]3 years ago

7 0

Answer:

403.75 tons of coal.

Step-by-step explanation:

You might be interested in

The hundreds digit and the ones digit of a three digit number are the same. The sum of its tree digits are 16. If the tens digit

tensa zangetsu [6.8K]

Step-by-step explanation:

Let us denote the three digit number by $abc$ , where $a$ is the hundreds digit, $b$ is the tens digit and $c$ is the ones digit.

Hundreds digit = $a$ = Ones digit = $c$

Sum of digits = $a+b+c=16$

So, $2c+b=16$

On exchanging tens and ones digit, value increases by 45. So $acb$ is 45 greater than $abc$ .

$acb-abc=45$

$100a+10c+b-100a-10b-c=45\\9c-9b=45\\c-b=5$

$2c+b=16,c-b=5\\3c=21\\c=7=a\\b=2$

∴ Required number is 727

7 0

3 years ago

The height of a trapezoid is 15m and the midsegment is 32m. What is the area of the trapezoid?

viktelen [127]

The formula is: A=1/2 h (base one + base two)

<span>Plug in your numbers and you will get the area.</span>

6 0

3 years ago

Is this correct? Bowmanian

BartSMP [9]

Yes it is correct!!!!

7 0

3 years ago

Read 2 more answers

Ken receives $521 for maintenance on his grandmother's house and $347 for yard work. Which is the best estimate for how much mon

VikaD [51]

Answer:

521

+347

868

870

Step-by-step explanation:

8 0

2 years ago

Hurry! Someone please help me I only have 5 minutes to do this quiz I don’t need you to show all your work just the answer becau

otez555 [7]

Answer:

6 and 3

Step-by-step explanation:

If you foil with 6 and 3 in the equation you get x squared + 3x - 18

8 0

2 years ago