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2 years ago

Solve the system of equations - 4x + 4y = -4 and - 4x + 2y = 16 by combining the equations.

Mathematics

1 answer:

EastWind [94]2 years ago

7 0

Esti handi rau de tot coardo

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In what quadrant does the angle 9pi/ 5 terminate?

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the angle 4pi/5 in quadrent 2

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The slope of curve zz at point c is approximately

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2 years ago

How to do this problem

Maslowich

Answer:

1 tens 3 ones

Step-by-step explanation:

All you do is count the numbers in the place value chart.

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3 years ago

Blaire needs more than 708 total points on assignments in her math class to pass. She only has 236 points and needs to do some e

blsea [12.9K]

Answer: D) x = 8

Step-by-step explanation: In order to get this answer, you need to keep the 236 and add 59 evry time until you get 708.

Another thing is to multiply 59 by 8, which will give you 472. Now we add 472 and 236 and we get 708.

59 x 8 = 472 + 236 = 708.

56 + 56 + 56 + 56 + 56 + 56 + 56 + 56 = 472 + 236 = 708.

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3 years ago

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The proportion of left handed people in the population is about 0.10. Suppose a random sample of 300 people is observed. (a) Wha

pantera1 [17]

Answer: $(\hat{p})\sim N(0.10,\ 0.017)$

Step-by-step explanation:

Sampling distribution of the sample proportion $(\hat{p})$ :

$(\hat{p})\sim N(p,\ \sqrt{\dfrac{p(1-p)}{n}})$

The sampling distribution of the sample proportion $(\hat{p})$ has mean = $\mu_{\hat{p}}=p$ and standard deviation = $\sigma_{\hat{p}}=\sqrt{\dfrac{p(1-p)}{n}}$ .

Given : The proportion of left handed people in the population is about 0.10.

i.e. p=0.10

sample size : n= 300

Then , the sampling distribution of the sample proportion $(\hat{p})$ will be :-

$(\hat{p})\sim N(0.10,\ \sqrt{\dfrac{0.10(1-0.10)}{300}})$

$(\hat{p})\sim N(0.10,\ \sqrt{0.0003})$

$(\hat{p})\sim N(0.10,\ 0.017)$ (approx)

Hence, the sampling distribution of the sample proportion $(\hat{p})$ is $(\hat{p})\sim N(0.10,\ 0.017)$

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3 years ago