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Nana76 [90]
2 years ago
5

The domain of y=x^2 is The range of y=x^2 is

Mathematics
1 answer:
Marizza181 [45]2 years ago
8 0

Answer:

Domain is all real Numbers

Range is all numbers over 0 - (0,

∞

)

Explanation:

One thing that you have to remember is that when you are finding the domain of a polynomial, it is all real number. it runs from

(

−

∞

,

∞

)

For finding the range, in a quadratic formula, you have to find when the finction has it's vertex. That is the place that the max or min happens and then you can find the range from there.

in this situaltion we found that the vertex is at the the origin at (0,0)

therefore the range is (0,

∞

)

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An online grocery store charges $0.10 per pound of produce for handling and delivery after
love history [14]

Answer:

They must buy 501 pounds of produce for the membership to be worth it.

Step-by-step explanation:

You can solve this question by first finding the difference between $0.10 and $0.25.

With some simple subtraction (0.25-0.10) we can find that the difference is that a non-membership person would pay $0.15 per pound.

You then divide 75 by 0.15 to find the extra weight it would take for the produce to equal $75. You should get 500 pounds.

At 500 pounds, the price would be equal if you had a membership or not.

You then must add 1 pound to make it more favorable to have the membership.

At 501 pounds the person with the membership would pay $125.10 and the person without the membership would pay $125.25

3 0
2 years ago
Suppose y varies directly with x. Write a direct variation equation that relates x and y. Then find the value of y when x = 7.
Sonja [21]
For direct variation, y = kx
8 = -4k
k = 8/-4 = -2

Therefore, required equation is y = -2x

when x = 7, y = -2(7) = -14
4 0
3 years ago
Read 2 more answers
Evaluate A^2-B^2 for A=3 and B=-4.
MAXImum [283]

Answer:

7

Step-by-step explanation:

3^2 = 9

(-4)^2 = 16

16-9= 7

4 0
2 years ago
A sample of 1000 college students at NC State University were randomly selected for a survey. Among the survey participants, 102
cupoosta [38]

Answer:

The upper endpoint of the 99% confidence interval for population proportion is 0.13.

Step-by-step explanation:

The confidence interval for population proportion is:

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

<u>Given:</u>

<em>n</em> = 1000

\hat p = 0.102

z_{\alpha /2}=z_{0.01/2}=z_{0.005}=2.58

*Use the standard normal table for the critical value.

Compute the 99% confidence interval for population proportion as follows:

CI=\hat p\pm z_{\alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n}}\\=0.102\pm 2.58\times\sqrt{\frac{0.102(1-0.102)}{1000}}\\=0.102\pm0.0248\\=(0.0772, 0.1268)\\\approx (0.08, 0.13)

Thus, the upper limit of the 99% confidence interval for population proportion is 0.13.

6 0
2 years ago
Jake is 50cm tall. Mike is 12cm taller than Jake. Tim is 11cm taller than Mike. How tall is Tim?
igor_vitrenko [27]
You do (50+12)+11             to get Tim's height. 
               Mike  Plus Taller

Which is... 73 cm!!
Easy, right? Except that it is like 2 ft tall...
7 0
3 years ago
Read 2 more answers
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