All categories

3 years ago

个,

Mathematics

1 answer:

rewona [7]3 years ago

6 0

Answer:

4800

3. Alexander is taking 15 credit-hours this semester at college. The

relationship between tuition and credit hours is shown by the graph below.

What is the constant of proportionality?

A. 15

B. 400

C. 800

D. 6000

4400

4000

3600

3200

2800

2400

2000

Tuition

1600

1200

800

400

Credit Hours

Step-by-step explanation:

You might be interested in

Correct answer gets brainliest.

Aleksandr-060686 [28]

You need to categorize the similar terms with the same exponential.

Here, 3 terms can be categorized: x^3, x^2 and constant

Then you simply manipulate the coefficient:

(5-9)x^3 + (-7+4)x^2 + (6+1) = -4x^3 - 3x^2 + 7

8 0

4 years ago

Read 2 more answers

Given the function f(x) = 2x + 2, what is the value of x if f(x) = 6?

Marrrta [24]

X will be equal to 4

4 0

3 years ago

Read 2 more answers

In a simple random sample of 300 boards from this shipment, 12 fall outside these specifications. Calculate the lower confidence

Lyrx [107]

Answer:

The 95% confidence interval for the percentage of all boards in this shipment that fall outside the specification is (1.8%, 6.2%).

Step-by-step explanation:

In a random sample of 300 boards the number of boards that fall outside the specification is 12.

Compute the sample proportion of boards that fall outside the specification in this sample as follows:

$\hat p =\frac{12}{300}=0.04$

The (1 - α)% confidence interval for population proportion p is:

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

The critical value of z for 95% confidence level is,

$z_{\alpha/2}=z_{0.05/2}=z_{0.025}=1.96$

*Use a z-table.

Compute the 95% confidence interval for the proportion of all boards in this shipment that fall outside the specification as follows:

$CI=\hat p\pm z_{\alpha/2}\sqrt{\frac{\hat p(1-\hat p)}{n}}\\=0.04\pm1.96\sqrt{\frac{0.04(1-0.04)}{300}}\\=0.04\pm0.022\\=(0.018, 0.062)\\\approx(1.8\%, 6.2\%)$

Thus, the 95% confidence interval for the proportion of all boards in this shipment that fall outside the specification is (1.8%, 6.2%).

6 0

3 years ago

Holly is earning money to buy a new bike. Her parents give her $20 to start and she sells lemonade for $1.50 a cup. a. write a l

slega [8]

Answer:

250= 1.50x + 20

Step-by-step explanation:

here 250 is the goal. 1.50 is how much she makes for a cup and x is the number of times to get x much. with how much her parents gave is 20. so we add the money her parents give and 1.50 times x to know the money shegets from all the lemonade selling. graphing the equation but I cant do it on here

God Bless :>

4 0

3 years ago

Read 2 more answers

The height of a doorway is 8 yards. What is the height of the doorway in inches?

charle [14.2K]

Answer:

288

Step-by-step explanation:

multiply the length value by 36

4 0

3 years ago