Determine if the relation below is a function.

Jessica purchased a DVD that was on sale for 12% off. The sales tax in her county is 3%. Let y represent the original price of t

Pepsi [2]

Answer:

0.88%y + 0.03%

Step-by-step explanation:

if it's 12% then: she's actually paid 88% with a tax of 3%.

4 0

3 years ago

Read 2 more answers

What is 5to the 126th power / 7891262378 *65867587656758764*5546657465848564865465800ret0trer0etr0te0rtew0rt0twr0ewrt0tre0wtrw00

irina1246 [14]

Answer:

1.175494351

Step-by-step explanation:

3 0

3 years ago

HELP ASAP!!!!!

nasty-shy [4]

Answer: Answer:

3^x

9, 15, 33, 87, 249

(4, 87) for example

Step-by-step explanation:

a) First differences of the f(x) values in the table are ...

19 -13 = 6, 37 -19 = 18, 91 -37 = 54, 253 -91 = 162

The second differences are not constant:

 18 -6 = 12, 54 -18 = 36, 162 -54 = 108 

But, we notice that both the first and second differences have a common ratio. This is characteristic of an exponential function. The common ratio is 18/6 = 3, so the parent function is 3^x

b) Translating a function down 4 units subtracts 4 from each y-value. The values of f(x) in the table would be ...

 9, 15, 33, 87, 249

c) The x-values of the function stay the same for a vertical translation, so the points in the table of the transformed function are ...

 (x, f(x)) = (1, 9), (2, 15), (3, 33), (4, 87), (5, 249)

5 0

3 years ago

A factory makes propeller drive shafts for ships. A quality assurance engineer at the factory needs to estimate the true mean le

borishaifa [10]

Answer:

$1000-1.96\frac{2}{\sqrt{4}}=998.04$

$1000+1.96\frac{2}{\sqrt{4}}=1001.96$

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

Solution to the problem

The confidence interval for the mean is given by the following formula:

$\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (1)

Since the Confidence is 0.95 or 95%, the value of $\alpha=0.05$ and $\alpha/2 =0.025$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.025,0,1)".And we see that $z_{\alpha/2}=1.96$

Now we have everything in order to replace into formula (1):

$1000-1.96\frac{2}{\sqrt{4}}=998.04$

$1000+1.96\frac{2}{\sqrt{4}}=1001.96$

5 0

3 years ago

I Need help with this Question

Dima020 [189]

Answer:GH = 5

Step-by-step explanation:

GJ = GH + HI + IJ

It is given that GH = IJ

Also, it can be seen that HJ = HI + IJ

We want to determine GH.

From the information given,

HJ = 7 and HI = 2. This means that

7 = 2 + IJ

Subtracting 2 from the left hand side and the right hand side of the equation, it becomes

IJ + 2 - 2 = 7 - 2

IJ = 5

Since GH = IJ, then it means that

GH = 5

5 0

4 years ago