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viva [34]
3 years ago
5

A train goes twice as fast downhill as it can go uphill, and 2/3 feet as fast uphill as it can go on level ground. If it goes 12

0 miles per hour downhill, how long will it take to travel 45 miles per flat
Mathematics
2 answers:
lisabon 2012 [21]3 years ago
8 0

Answer:120/2=60 speed uphill. Speed level 3/2 uphill=90 speed downhill 120 on flat land d=45=90*t t=1/2 hrs

Step-by-step explanation:

Sergeu [11.5K]3 years ago
6 0

Answer:

Step-by-step explanation:

ion know?

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Factories fully. X to the power of three - x
spayn [35]

The expression x³ - x when factored out is x(x -1)(x + 1)

<h3>How to determine the factored expression?</h3>

From the question, we have the following expression that can be used in our computation:

X to the power of three - x

Express the expression properly

So, we have the following representation

x³ - x

The terms of the above expression are:

x³ and x

And the factor of x³ and x

Factor = x

So, we divide x³ and x by x

The results of these divisions are

x³/x = x²

x/x = 1

So, we have the following results

(x³ - x) = x(x² -1)

Express x² -1 as a difference of two squares

So, we have

(x³ - x) = x(x -1)(x + 1)

Hence, the factored expression is x(x -1)(x + 1)

Read more about expressions at

brainly.com/question/18631189

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7 0
1 year ago
If the radius of the circle was doubled what effect would it have on the area
ch4aika [34]

Answer:

Step-by-step explanation:

If the radius of a circle is doubled, the area of the circle will be quadrupled and the circumference will also be doubled. This makes sense because the area of a circle is directly proportional to the square of the radius of the circle (if the radius of a circle is increased x times, its area will be increased to x^2 times the original area), whereas the circumference is proportional to the size of the radius (if the radius of a circle is increased x times, its circumference will increase x times).

5 0
3 years ago
Read 2 more answers
4/9 - 2/5 give answer in its simpliest form
wlad13 [49]

Answer:

2/45 is your answer

8 0
2 years ago
Simplify the expression completely. (5√50-3√200+3√18)
Kaylis [27]

Answer:

4\sqrt{2}

Step-by-step explanation:

5\sqrt{50} - 3\sqrt{200}  + 3\sqrt{18} =

= 25\sqrt{2} - 30\sqrt{2} + 9\sqrt{2} = 4\sqrt{2}

8 0
3 years ago
Read 2 more answers
HELP PLEASEEEEEEEEEEEEE
zhenek [66]

9514 1404 393

Answer:

  2 1/12 days

Step-by-step explanation:

Time is the ratio of distance to speed.

  (1200 mi)/(24 mi/h) × (1 day)/(24 h) = 25/12 day = 2 1/12 days

5 0
3 years ago
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