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3 years ago

Factor the expression completely. -9x^3+72x^5 −9x 3 +72x 5

Mathematics

1 answer:

asambeis [7]3 years ago

4 0

Answer:

72x5−9x3+333x

Step-by-step explanation:

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Point B is at (4, 5). It is reflected on the x-axis. What are the coordinates of its image, B'?

seropon [69]

Answer: (4, -5)

(so it sendswfegrgnhernth4retn)

4 0

3 years ago

Find the value of x. Round to the nearest tenth A. 4.6 B. 5.0 C. 7.8 D. 9.3

gayaneshka [121]

Answer:

C. 7.8

Step-by-step explanation:

This problem involves the use of a trigonometric ratio. This one specifically involves the use of cosine as it provides the leg adjacent to the angle and the hypotenuse.

cos(40) = 6/x

cos(40)*x=6/x*x

cos(40)*x=6

cos(40)/cos(40)*x=6/cos(40)

x=6/cos(40)

x=7.83

The value of x is C. 7.8

4 0

3 years ago

Please Help!! Give Brainly!! What is the value of (14^0) ^-2? -1/196 1/196 0 1

Trava [24]

Answer:

so option 1 is correct

Step-by-step explanation:

$(14^0) ^-2$

power 0 * -2 = 0

if power is 0 then it equals to 1 so

$14^0$

= 1

8 0

3 years ago

Salaries for various positions can vary significantly depending on whether the company is in the public or private sector. The U

DIA [1.3K]

Answer:

a) 0.004

b) 0.9609

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 76503

Standard Deviation, σ = 8850

We are given that the distribution of annual salaries is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) P(salary greater than 100,000)

P(x > 100000)

$P( x > 100000) = P( z > \displaystyle\frac{100000 - 76503}{8850}) = P(z > 2.655)$

$= 1 - P(z \leq 2.655)$

Calculation the value from standard normal z table, we have,

$P(x > 100000) = 1 - 0.996 = 0.004 = 0.4\%$

b) P(sample mean annual salary falls between 70,000 and 80,000 dollars)

Sample size, n = 20

Standard error due to sampling =

$\dfrac{\sigma}{\sqrt{n}} = \dfrac{8850}{\sqrt{20}} = 1978.92$

$P(70000 \leq x \leq 80000) = P(\displaystyle\frac{70000 - 76503}{1978.92} \leq z \leq \displaystyle\frac{80000-76503}{1978.92})\\\\ = P(-3.286 \leq z \leq 1.767)\\\\= P(z \leq 1.767) - P(z < -3.286)\\=0.9614 - 0.0005= 0.9609 = 96.09\%$

$P(70000 \leq x \leq 80000) = 96.09\%$

7 0

4 years ago

A circular wall clock has a diameter of 18 cm which measurement is closest to the circumstances of the clock in cm

BabaBlast [244]

Answer:

56.55cm

Step-by-step explanation:

I assume that you mean circumference instead of circumstances, so if so then that is the answer

3 0

3 years ago