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Aneli [31]
3 years ago
10

Perform the indicated operation and simplify 10x/5x-2 + 7x-2/5x-2

Mathematics
1 answer:
tatiyna3 years ago
6 0

Answer:

\frac{17x-2}{5x-2}

Step-by-step explanation:

10x/5x-2 + 7x-2/5x-2

\frac{10x}{5x-2} + \frac{7x-2}{5x-2}

Here both fractions have same denominator 5x-2

When the denominators are same then we can combine the numerators

we put denominator only once

\frac{10x+7x-2}{5x-2}

Now we simplify it

Combine like terms: 10x+7x becomes 17x

\frac{17x-2}{5x-2}

There is no common factor for the top and bottom

So we cannot simplify further

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Area is length times width. Therefore, width is area divided by length. Convert 11 7/8 to the improper fraction 95/8 and convert 4 3/4 to 19/4. Then, you can fine 95/8 divided by 19/4 by flipping the second fraction and multiplying so that you have 95/8 times 4/19. 4 times 95 is 380 and 8 times 19 is 152. Therefore, the answer is 380/152. This is equivalent to 5/2 or 2.5. 
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Find the measures of the legs of isosceles triangle ABC if AB= 2x+4,BC= 3x-1,AC=x+1 and the perimeter of the triangle ABC is 34
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Eurostar is a high-speed railway service connecting
erma4kov [3.2K]

Answer:

Step-by-step explanation:

This is simply a units conversion problem.  It gives us for the number of passengers, the number of seats per carriage and the number of carriages per train.  To change the units from passengers to trains without changing the value, we use the multiplicative identity (that is, 1).

350000 passengers

(350000 passengers) * 1

(350000 passengers) * ((1 carriage)/(32 passengers)) * ((1 train)/(15 carriages)

   [note:  passengers and carriages cancel. Leaving only trains]

(350000)*(1/32)*(1/15) trains       [note: I write this way to paste into MS Excel]

729.1667  trains                 [oh, but don’t just round this number either up or down]

   729 full trains can carry 729*32*15 = 349920 passengers

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Now, we can say that 730 trains are adequate to carry 350000 passengers.

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3 years ago
1.) Simplify: y = -8 + 6(x-1)
swat32
8+6=14. (X-1=1x)

14•1x

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