Can someone help me with this equation 20x-16y=11

Describe the function over each part of its domain. State whether it is constant, increasing, or decreasing, and state the slope

vivado [14]

The function is illustrated below based on the information.

<h3>How to describe the function?</h3>

When x <= 8000

The cost remains constant at 0.35 when x increases from 0 to 8000. The slope of the cost function over this part is 0

When 8000 < x <= 20000

The cost remains constant at 0.75 when x increases from 8000 to 20000 and the slope of the cost function over this part is 0.

Learn more about functions on:

brainly.com/question/25638609

#SPJ1

5 0

1 year ago

Josh was given $50 for his birthday He spent $5.52 on cancy S325 on books.

Readme [11.4K]

Answer:

$20.11 (assuming S325 was meant to be $3.25)

Step-by-step explanation:

50.00 - 5.52 = 44.48

44.48 - 3.25 = 41.23

41.23 -21.12 = 20.11

Hope this helps <3

3 0

3 years ago

Using traditional methods, it takes 95 hours to receive a basic flying license. A new license training method using Computer Aid

Snowcat [4.5K]

Answer:

There is not sufficient evidence to support the claim that the technique performs differently than the traditional method.

Step-by-step explanation:

The null hypothesis is:

$H_{0} = 95$

The alternate hypotesis is:

$H_{1} \neq 95$

The test statistic is:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the value tested at the null hypothesis, $\sigma$ is the standard deviation and n is the size of the sample.

A researcher used the technique with 260 students and observed that they had a mean of 94 hours. Assume the standard deviation is known to be 6.

This means, respectively, that $n = 260, X = 94, \sigma = 6$

The test-statistic is:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$z = \frac{94 - 95}{\frac{6}{\sqrt{260}}}$

$z = -2.69$

The pvalue is:

2(P(Z < -2.69))

P(Z < -2.69) is the pvalue of Z when X = -2.69, which looking at the z-table, is 0.0036

2*(0.0036) = 0.0072

0.0072 < 0.01, which means that the null hypothesis is accepted, that is, there is not sufficient evidence to support the claim that the technique performs differently than the traditional method.

7 0

2 years ago

Diego has run 4/5 of a race distance. He has run 7 2/3

lianna [129]

Your question is incomplete, but I am guessing that it reads something like:

“Diego has run 4/5 of a race distance. He has run 7 2/3 miles. How long is the race? Or “how many miles does he have left?”

How long is the race? = 9 7/12 miles

4/5x = 7 2/3
4/5x = 23/3
x = 23/3 • 5/4
x = 115/12
x = 9.58333
x = 9 7/12 miles

How many miles does he have left? = 1 1/12 miles

1/5 • 115/12 = 115/60 = 1.916666
= 1 55/60 = 1 11/12 miles

Let me know if I didn’t guess your question correctly and I will try to help more.

8 0

3 years ago

The projected population of a certain ethnic group(in millions) can be approximated by p(t)equals=39.07 left parenthesis 1.021

user100 [1]

Answer:

a) p(10) ≈ 48.10
b) about 1.00 million/year

Step-by-step explanation:

a) Use t=10 in the given formula and do the arithmetic.

39.07×1.021^10 ≈ 48.0951 ≈ 48.10 . . . millions

__

b) The derivative of p(t) is ...

p'(t) = p(t)·ln(1.021) ≈ 0.8120·1.021^t

p'(10) ≈ 0.99954 ≈ 1.00 . . . . millions per year

5 0

3 years ago