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4 years ago

What is the difference? x/x^2-2x-15 -4/x^2+2x-35 '

Mathematics

2 answers:

Butoxors [25]4 years ago

8 0

Answer:

Option D.

Step-by-step explanation:

The given expression is : $\frac{x}{x^{2}-2x-15 } -\frac{4}{x^{2} +2x-35}$

Factoring the denominators we have:

$\frac{x}{(x-5)(x+3)} -\frac{4}{(x+7)(x-5)}$

Making denominators same and simplifying the fractions we have:

$\frac{x^{2}+7x-4x-12 }{(x-5)(x+3)(x+7)} =\frac{x^{2}+3x-12 }{(x+3)(x-5)(x+7)}$

Option D is the right anser.

Vilka [71]4 years ago

8 0

Answer:

D!!!

Step-by-step explanation:

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If a straight line y = mx + c passes through the intersecting point of 3x - y = 8 and x+ 2y = 5 which is perpendicular to the li

Sindrei [870]

Answer:

Point of intersection:

$3x - y = 8 - - - (a) \\ x + 2y = 5 - - - (b)$

2 × equation(b) + equation (a):

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3 years ago

Add. Write your answer in simplest form. 4 6/7 + 3 5/7=____

qaws [65]

First add the fractions.

6/7 + 5/7 = 1 4/7

Then add the whole numbers

4 + 3 = 7

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7 + 1 4/7 = 8 4/7

Your answer is 8 4/7

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3 years ago

The interior angles formed by the sides of a quadrilateral have measures that sum to 360°.

hammer [34]

Answer:

x = 59

Step-by-step explanation:

Equations

The interior angles formed by the sides of a quadrilateral have measures that sum to 360°.

The image shows a four-sided polygon and its four angles measures, thus we sum them all and equate the sum to 360:

x + x + 2x + 3 + 2x + 3 = 360

Simplifying:

6x + 6 = 360

Subtracting 6:

6x = 354

Dividing by 6:

x = 354/6

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3 years ago

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schepotkina [342]

Lateral Area of a cylinder is ; 2πR.H

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3 years ago

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SpyIntel [72]

Answer:

C, D

Step-by-step explanation:

in the first coordinate plane, both numbers in a coordinate must be positive

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3 years ago