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Rina8888 [55]
3 years ago
10

Identify the slope and y-intercept of the function y = 4x - 9. O A. The slope is -9. The yintercept is (0,4). B. The slope is 4.

The y-intercept is (0, -9). C. The slope is 9. The yintercept is (0,4). O D. The slope is 4. The y-intercept is (0,9).​
Mathematics
1 answer:
RUDIKE [14]3 years ago
6 0

Answer:

B

Step-by-step explanation:

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When n=343 college students are randomly selected and surveyed, it is found that x=110 own a car. Find a 99% confidence interval
Liono4ka [1.6K]

Answer:

The margin of error will be "0.65". A further explanation is provided below.

Step-by-step explanation:

The given values are:

n = 343

x = 110

At 99% confidence level,

\alpha = 1-99%

  =1-0.99

  =0.01

then,

\frac{\alpha}{2} =\frac{0.01}{2}

  =0.005

or,

Z_{\frac{\alpha}{2} }=Z_{0.005}

     =2.576

Now,

The point estimate will be:

⇒  \hat{P}=\frac{x}{n}

⇒      =\frac{110}{343}

⇒      =0.321

or,

⇒  1-\hat{P}=1-0.321

⇒            =0.679

The margin of error will be:

⇒  E=Z_{\frac{\alpha}{2} }\times \sqrt (\frac{(\hat{P}\times (1 - \hat{P})) }{n} )

On substituting the above values, we get

⇒      =2.576\times \sqrt{\frac{0.321\times 0.679}{343} }

⇒      =2.576\times \sqrt{\frac{0.217959}{343} }

⇒      =0.065

hence,

⇒  \hat{P}-E

⇒  0.321-0.065

⇒  0.256,0.386

6 0
3 years ago
Two vehicles, a car and a truck, leave an intersection at the same time. The car heads east at an average speed of 70 miles per
forsale [732]

Step-by-step explanation:

[70,30] = 210 miles per hour

5 0
3 years ago
Type the correct number in the blank
Mademuasel [1]

Answer:

4.11

Step-by-step explanation:

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2 years ago
In the following diagram which segments are radii of circle p​
lapo4ka [179]

Answer:

The correct answers would be A,C,D

Step-by-step explanation:

5 0
3 years ago
The distance between the pair of points (3,5) and (11,11)
statuscvo [17]

Formula: d = √(x2-x1)²+(y2-y1)²

d = √(11-3)²+(11-5)²

d = √8²+6²

d = √64+36

d = √100

d = 10

Best of Luck!

5 0
3 years ago
Read 2 more answers
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