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4 years ago

Solve for x. 2x−3=4x+4 a)−2 b)10 c)72 d)−11

Mathematics

1 answer:

Andrej [43]4 years ago

6 0

None of the above answers are correct in the form it is written. The correct answer would be -7/2.

In order to solve this, you must use the order of operations for solving.

2x - 3 = 4x + 4 -----> Subtract 2x from both sides

-3 = 2x + 4 ------> Subtract 4 from both sides.

-7 = 2x ----> Divide both sides by 2

-7/2 = x

If this is not an option, you may have copied the problem incorrectly or did not properly list the answers.

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Prove the following trigonometric identities

alexandr1967 [171]

Answer:

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2 years ago

F(x)=2x^2+4x-16<br> g(x)=4x^2-16<br> Find (f/g)(x).

Nastasia [14]

Answer:

Step-by-step explanation:

$(\frac{f}{g} )(x) = \frac{2x^{2} +4x-16}{4x^{2} -16}$

2x²+4x -16 = 2(x²+2x-8); factor 2

= 2(x+4)(x-2) ;factor the quadratic equation

4x²-16 = 4(x²-4) ; factor 4

=4(x²- 2²) ; rewrite 4 as 2²

= 4(x-2)(x+2); now use the difference of two squares a²-b²=(a-b)(a+b)

so now we have:

$(\frac{f}{g}) (x) = \frac{2(x+4)(x-2)}{4(x-2)(x+2)}$ ; simplify (x-2) from numerator and denominator

and 2/4 as 1/2

$(\frac{f}{g}) (x) = \frac{(x+4)}{2(x+2)}$

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3 years ago

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AURORKA [14]

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3 years ago

Order of Operations with and without variables

lyudmila [28]

I think the answer is -4

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4 years ago

pamela claims that if you multiply a fraction that is negative by another fraction that is negative, the product will also be ne

svetoff [14.1K]

Pamela is incorrect. When you multiply anything negative by a negative, the product will always be a positive. Because the two negative signs cancel each other out.

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4 years ago