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katrin2010 [14]
2 years ago
12

Use the information given to enter an equation in standard form.

Mathematics
2 answers:
erik [133]2 years ago
8 0
The answer is 2x-y=-2
Natasha_Volkova [10]2 years ago
3 0

Answer:

2x - y = -2

Step-by-step explanation:

m=\frac{y^2-y^1}{x^2-x^1}

m = \frac{10-12}{4-5} =\frac{-2}{-1} =2

10=2(4)+b\\10=8+b\\2=b\\y=2x+2\\2x-y=-2

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A survey of 85 families showed that 36 owned at least one DVD player. Find the 99% confidence interval estimate of the true prop
attashe74 [19]

Answer:

0.424 - 2.58\sqrt{\frac{0.424(1-0.424)}{85}}=0.286

0.424 + 2.58\sqrt{\frac{0.424(1-0.424)}{85}}=0.562

The 99% confidence interval would be given by (0.286;0.562)

Step-by-step explanation:

Information given:

X= 36 represent the families owned at least one DVD player

n= 85 represent the total number of families

\hat p=\frac{36}{85}= 0.424 represent the estimated proportion of families owned at least one DVD player

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 99% of confidence, our significance level would be given by \alpha=1-0.99=0.01 and \alpha/2 =0.05. And the critical value would be given by:

z_{\alpha/2}=-2.58, z_{1-\alpha/2}=2.58

The confidence interval for the mean is given by the following formula:  

\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}

If we replace the values obtained we got:

0.424 - 2.58\sqrt{\frac{0.424(1-0.424)}{85}}=0.286

0.424 + 2.58\sqrt{\frac{0.424(1-0.424)}{85}}=0.562

The 99% confidence interval would be given by (0.286;0.562)

8 0
3 years ago
If it took 4 hours to clean 8 houses, how many houses could be cleaned in 7 hours
Natasha2012 [34]

Answer:

14

Step-by-step explanation:

you clean 2 a hour so 7*2=14

4 0
3 years ago
Read 2 more answers
Anyone who answers correctly gets brainlist!
Alex787 [66]

Answer:

B

Step-by-step explanation:

easy

3 0
2 years ago
Read 2 more answers
(10.01 MC) Marko is playing the video game Fort Attack. The purpose of the game is to shoot invading bandits that are trying to
rusak2 [61]
Angle of fire in degrees = 90 + 30 =120 degrees

Angle of fire radians =180 degrees = π

120* π/180=120π /180 OR 4π/6 OR 2π/3
8 0
2 years ago
Read 2 more answers
elect the best answer for the question. 16. Which answer choice contains all the factors of 10? A. 1, 2, 5 B. 2, 5 C. 1, 2, 5, 1
ruslelena [56]
The coorect answer is C. 1, 2, 5, 10
8 0
3 years ago
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