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svetoff [14.1K]

2 years ago

12

Suppose the relationship between x and y is proportional. When x is 7 , y is . 147 Identify the constant of proportionality of

y to x.

1 answer:

Sliva [168]2 years ago

5 0

Answer:

its 21

Step-by-step explanation:

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Trevor Benjamin is a salesperson who is paid a monthly salary of $500 plus 2% commission on sales. Write an equation that repres

Varvara68 [4.7K]

Let, the amount of sales = x
Then, commission from sale will be: x * 0.02

So, Equation would be: 500 + 0.02x

Hope this helps!

6 0

3 years ago

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Which statements describe acceleration? Check all that apply.

serious [3.7K]

<span>Positive acceleration occurs when an object speeds up in the positive direction.
Positive acceleration occurs when an object speeds up in the negative direction.
Hope this helps.</span>

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3 years ago

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In a survey of 603 adults, 98 said that they regularly lie to people conducting surveys. Create a 99% confidence interval for th

marysya [2.9K]

Answer:

The population proportion is estimated to be with 99% confidence within the interval (0.1238, 0.2012).

Step-by-step explanation:

The formula for estimating the population proportion by a confidence interval is given by:

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

Where:

$\hat{p}$ is the sample's proportion of success, which in this case is the people that regularly lie during surveys,

$z_{\alpha /2}$ is the critical value needed to find the tails of distribution related to the confidence level,

$n$ is the sample's size.

<u>First</u> we compute the $\hat{p}$ value:

$\hat{p}=\frac{successes}{n}=\frac{98}{603}=0.1625$

<u>Next</u> we find the z-score at any z-distribution table or app (in this case i've used StatKey):

$z_{\alpha /2}=2.576$

Now we can replace in the formula with the obtained values to compute the confidence interval:

$\hat{p}\pm z_{\alpha /2}\times\sqrt{\frac{\hat{p}\times(1-\hat{p})}{n}}=0.1625\pm 2.576\times\sqrt{\frac{0.1625\times(1-0.1625)}{603}}=(0.1238, 0.2012)$

5 0

3 years ago

Unit 3: Parallel and Perpendicular Lines<br> Homework 5: Slopes of Lines

NISA [10]

Use the option number 5 and draw a parallel and perpendicular line across to make the slope of the lines collapse

5 0

2 years ago

5 plus 2 minus 6 times 4

nevsk [136]

Answer:

714

Step-by-step explanation:

5+2=7

7-6=1

1x4=4

3 0

3 years ago

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