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Shalnov [3]
2 years ago
6

An airplane can reach a speed of 650 miles per hour. What is the unit rate per minute?

Mathematics
1 answer:
melomori [17]2 years ago
6 0

Answer:

10.8333 miles per minute

Step-by-step explanation:

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Historians estimate that there were about 7 million people on the earth in 4,000 BCE. Now there are about 7 billion! We write 7
Ksju [112]
There are 1000 Times more people on earth right now than there was in 4,000 BCE. It's just 7billion divided by 7million.
8 0
2 years ago
A miners' cage of mass 420 kg contains 3 miners of total mass 280 kg. The cage
svp [43]

Answer:

5817 Newtons.

Step-by-step explanation:

Total mass of the cage + the miners = 700 Kg which is a downward force of  700g N.

The net downward force = 700g - T where T is the tension (force) in the cable. The g = acceleration due to gravity = 9.81 m s-2.

We  calculate the  acceleration of the cage by using an equation of motion:

Distance = ut + 1/2 a t^2     where u = initial velocity , t = time and a = acceleration:

75 = 0(t) + 1/2 a (10^2)

50a =  75

a = 1.5 m s-2.

So using Newtons second law of motion

Force = mass * acceleration:

700*9.81 - T = 700 * 1.5

T = 700 * 9.81 - 700*1.5

= 5817 N.

8 0
3 years ago
How many times greater is the value of the 4 in 64781 than the value of the 2 in 25409
HACTEHA [7]

64,781 --- 4,000

25,409 --- 400

4,000÷400=10

7 0
3 years ago
Which arrangment shows 27/5,5 3/5, and 33/6 in order least to greatest
svetoff [14.1K]
5 3/5, 27/5, 33/6 , hope I helped lmk if I got it right
8 0
2 years ago
Lucy borrowed $425 from Colleen. Colleen charges Lucy 5.3% interest if Lucy pays Colleen back in 3 years how much does she pay C
Sonja [21]

Answer: Lucy pays $ 492.58  back altogether.

Step-by-step explanation:

Formula : Interest = Principal x Rate x Time

Given: Principal  = $425  , rate = 5.3% = 0.053 , time = 3 years

Interest = 425 x 0.053 x 3 ≈ $ 67.58

Total amount need to pay back = Principal + Interest

= $ (425+67.58)

= $ 492.58

Hence, Lucy pays $ 492.58  back altogether.

7 0
2 years ago
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