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3 years ago

How to factor 2x-10-5x+25

Mathematics

2 answers:

stira [4]3 years ago

7 0

(2x-10) (-5x+25)
x=-5

katovenus [111]3 years ago

4 0

(2x-5x)+(-10+25)
=-3x+15

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(sec(π/3) + tan(-7π/4))/(1-cos(2 π/3))

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Answer:

Step-by-step explanation:

3+3_3=3

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3 years ago

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Find the value of x.

hjlf

Answer:

x = 14

Step-by-step explanation:

Since they are similar triangles, their sides are proportional

12 : 15 :: 8 : x - 4

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12 × ( x- 4 ) = 15 × 8

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2 years ago

Solve for x: 4/5x + 4/3 = 2x

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3 years ago

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estimate to draw the 1/4 inch marks on the paper strip. then fill in the blanks below whole inch is equal to __________half inch

Annette [7]

2 because 2 halfs is equal to 1 whole

4 0

3 years ago

The denominator of a fraction is 10 more than its numerator.

Dennis_Churaev [7]

The right answer is Option C : 5

Step-by-step explanation:

Let,

The numerator of fraction = x

The denominator of a fraction is 10 more than its numerator.

$\frac{x}{x+10}$

When 1/3 is added to this fraction,

$\frac{x}{x+10}+\frac{1}{3}$

the resulting fraction’s denominator is three times the denominator of the original fraction its numerator is 15 less than its denominator

$\frac{3(x+10)-15}{3(x+10)}$

Therefore, it becomes

$\frac{x}{x+10}+\frac{1}{3} = \frac{3(x+10)-15}{3(x+10)}$

Taking LCM on left side

$\frac{3x+(x+10)}{3(x+10)}=\frac{(3x+30)-15}{3(x+10)}\\\\\frac{3x+x+10}{3(x+10)}=\frac{3x+30-15}{x(x+10)}\\\\\frac{4x+10}{3(x+10)}=\frac{3x+15}{3(x+10)}$

Multiplying both sides by 3(x+10)

$3(x+10)*\frac{4x+10}{3(x+10)}=\frac{3x+15}{3(x+10)}*3(x+10)\\4x+10=3x+15\\4x-3x=15-10\\x=5$

The numerator of original fraction is 5.

The right answer is Option C : 5

Keywords: fraction, addition

Learn more about fractions at:

#LearnwithBrainly

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3 years ago