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SashulF [63]
2 years ago
15

PLEASE HELP ME!!! Write the equivalent expression for y2 - 2(x + 7y2)

Mathematics
2 answers:
madam [21]2 years ago
8 0

Answer:

your answer is -2x-13y^2

Step-by-step explanation:

Pani-rosa [81]2 years ago
5 0
Y2 - 2 • X - 2 • 7Y2 = Y2 - 2X - 14Y2
adding like terms: Y2 - 14Y2 = - 13Y2
Now we have: -2X - 13Y2
The answer is : -2X - 13 Y2
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The mean one-way commute to work in Chowchilla is 7 minutes. The standard deviation is 2.4 minutes, and the population is normal
adell [148]

Answer:

The answer is below

Step-by-step explanation:

Given that:

The mean (μ) one-way commute to work in Chowchilla is 7 minutes. The standard deviation (σ) is 2.4 minutes.

The z score is used to determine by how many standard deviations the raw score is above or below the mean. It is given by:

z=\frac{x-\mu}{\sigma}

a) For x < 2:

z=\frac{x-\mu}{\sigma}=\frac{2-7}{2.4} =-2.08

From normal distribution table,  P(x < 2) = P(z < -2.08) = 0.0188 = 1.88%

b) For x = 2:

z=\frac{x-\mu}{\sigma}=\frac{2-7}{2.4} =-2.08

For x = 11:

z=\frac{x-\mu}{\sigma}=\frac{11-7}{2.4} =1.67

From normal distribution table, P(2 < x < 11) = P(-2.08 < z < 1.67 ) = P(z < 1.67) - P(z < -2.08) = 0.9525 - 0.0188 = 0.9337  

c) For x = 11:

z=\frac{x-\mu}{\sigma}=\frac{11-7}{2.4} =1.67

From normal distribution table,  P(x < 11) = P(z < 1.67) = 0.9525

d) For x = 2:

z=\frac{x-\mu}{\sigma}=\frac{2-7}{2.4} =-2.08

For x = 5:

z=\frac{x-\mu}{\sigma}=\frac{5-7}{2.4} =-0.83

From normal distribution table, P(2 < x < 5) = P(-2.08 < z < -0.83 ) = P(z < -0.83) - P(z < -2.08) =  0.2033- 0.0188 = 0.1845  

e) For x = 5:

z=\frac{x-\mu}{\sigma}=\frac{5-7}{2.4} =-0.83

From normal distribution table,  P(x < 5) = P(z < -0.83) = 0.2033

8 0
3 years ago
Write an algebraic expression to answer each question do this on a sheet of paper
Korolek [52]

Hello.

In 10 years, his age will be

\mathrm{z+10}

The sum of his current age and 10 equals his age in 10 years.

2 years ago his age was

\mathrm{z-2}

The difference of his current age and 2 equals his age 2 years ago.

7 years ago his age was

\mathrm{z-7}

The difference of his current age and 7 equals his age 7 years ago.

Therefore, his age after 10 years will be \mathrm{z+10}, his age 2 years ago was \mathrm{z-2}, and his age 7 years ago was \mathrm{z-7}

I hope it helps.

Have a nice day.

\boxed{imperturbability}

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2 years ago
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The answer is x=6/11.
Tiger Algebra is a really good tool for algebra if you need some help.
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Download the app photo math and there is the answer
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Factor the expression. 24x+3
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Answer:

Step-by-step explanation:

24x = 3 * 8 * x

3     = 3 * 1

Greatest common factor = 3

24x +3 = 3*8x + 3*1

           =3(8x + 1)

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2 years ago
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