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3 years ago

Simplify: 3(4x+1) Thank you so much

Mathematics

1 answer:

Anvisha [2.4K]3 years ago

6 0

Answer:

the answer is 12x +3

Step-by-step explanation:

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Subtract the rational expression 1/x^2-x-6 - x/x+2.

Aleksandr [31]

Answer:

Step-by-step explanation:

x² - x -6 = x² + 2x - 3x - 3*2

=x(x + 2) - 3(x + 2)

= (x + 2 )(x - 3)

$\frac{1}{x^{2}-x-6}+\frac{x}{x+2}=\frac{1}{(x +2 )(x - 3)}-\frac{x}{x + 2}\\$

$= \frac{1}{(x+2)(x-3)}-\frac{x(x-3)}{(x+2)(x-3)}\\\\=\frac{1-x(x-3)}{(x+2)(x-3)}\\\\=\frac{1-x^{2}+3x}{(x+2)(x-3)}\\\\$

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2 years ago

Planes A and B are shown.

Gnom [1K]

Answer:

Step-by-step explanation:

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2 years ago

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A polygon is reflected across a line. The angles in the original figure are compared to the corresponding angles in the image to

irina [24]

None. <span>They will always be congruent.</span>

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3 years ago

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Kate plays on her schools basketball team last season she made 70% of her 50 free throw attempts how is 70% expressed as a fract

Ostrovityanka [42]

Answer:

Step-by-step explanation:

70% as a fraction is 70/100

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3 years ago

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The Insure.com website reports that the mean annual premium for automobile insurance in the United States was $1,503 in March 20

stira [4]

Answer:

a) Option A)

$H_{0}: \mu \geq 1503\\H_A: \mu < 1503$

b) Point estimate of difference = -78

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = $1,503

Sample mean, $\bar{x}$ = $1,425

Sample size, n = 25

Sample standard deviation, s = $160

We have to carry a hypothesis test that the mean annual premium in Pennsylvania is lower than the national mean annual premium.

a) First, we design the null and the alternate hypothesis

$H_{0}: \mu \geq 1503\text{ dollars}\\H_A: \mu < 1503\text{ dollars}$

b) Point estimate of the difference between the mean annual premium in Pennsylvania and the national mean

Point estimate of difference =

Mean annual premium in Pennsylvania - National mean

$\text{Point estimate} = \bar{x} - \mu = 1425 - 1503 = -78$

Thus,

Point estimate of difference = -78

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3 years ago