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2 years ago

It takes Niamh 3 hours to drive from Ashdown to Bridgeton at an average speed of 50 mph.

Mathematics

1 answer:

Nadya [2.5K]2 years ago

6 0

Answer:

46.7

Step-by-step explanation:

3 × 50 = 150 miles

60 ÷ 40 = 1.5 h.

(150 + 60) ÷ (1.5 + 3) = 46.7 mph

(Speed × Time = Distance)

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A tank can be filled by one pump in 3.2 hours and by another pump in 80 minutes. A third pump can drain the tank in 2 hours and

Mademuasel [1]

Answer:

Rounding to the nearest minute, it would take 95 minutes, or 1 hour and 35 minutes.

Step-by-step explanation:

Let's convert each time to minutes:

3.2 hours = 192 minutes

80 minutes = 80 minutes

2 hr 20 min = 140 minutes

Next, let's find the least common multiple:

LCM(192, 80, 140) = 6720

So let's say the volume of the tank is 6720 units. The speed of each pump is therefore:

Pump 1 = 6720 units / 192 minutes = 35 units/minute

Pump 2 = 6720 units / 80 minutes = 84 units/minute

Pump 3 = -6720 units / 140 minutes = -48 units/minute

Their combined speed is:

35 + 84 − 48 = 71 units/minute

So the time to fill the tank is:

6720 units / (71 units/minute) = 94.65 minutes

Rounding to the nearest minute, it would take 95 minutes, or 1 hour and 35 minutes.

6 0

4 years ago

Twenty percent of a number is 14. find the number

7nadin3 [17]

The answer is: 70 .
___________________________________________
Explanation:
_________________________________

(20/100) x = 14; solve for "x".

(20/100) = 2/10 = 1/5 ;

(1/5) x = 14

x/5 = 14 ;

x = 14 * 5 ;

x = 70 . The answer is: 70 .
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5 0

3 years ago

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Mama dbdjd d did f dbjdbf ddbdnd

Blizzard [7]

Answer:

ah yes mama

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

How can I calculate a square root without guess and check?

Darina [25.2K]

By multiplying the same numbers.

2*2=4 *4 square root is 2

3*3=9 *9 square root is 3

4*4=16 *16 square root is 4

5*5=25 *25 square root is 5

Try this, maybe it will work :)

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3 years ago

Any suggestions or answers

Sati [7]

Answer:

$x=81\degree$