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3 years ago

Please help me out! i have a few more of these questions, about 4

Mathematics

2 answers:

Ne4ueva [31]3 years ago

6 0

Answer:

Step-by-step explanation:

put a point in at negative 1 first; that is the y value.

Then, go up 1 then to the right six points. that should result in the next point being at (0,6).

Keep going and draw a line

Eva8 [605]3 years ago

5 0

Step-by-step explanation:

You can make a table of values to find the points that belong to the line and then draw the line through those points. Here are some: (-6, -2), (0, -1), and (6, 5). You can use any value for x in your table. Hope this helps!

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A home’s value increases at an average rate of 5.5% each year. The current value is $120,000. What function can be used to find

Pachacha [2.7K]

Answer:

$f(x)=120,000 \times (1.055)^{x}$ .

Step-by-step explanation:

We are given that,

The present value for the home is $120,000 and the rate of interest is 5.5% i.e. 0.055.

As we know that the function for the home is given by,

$f(x)=P \times (1+r)^{x}$

where P = present value, r = rate of interest, x = number of years.

So, according to the question, we get that,

$f(x)=120,000 \times (1+0.055)^{x}$

i.e. $f(x)=120,000 \times (1.055)^{x}$ .

Hence, we see that the function that represents the value of the home is $f(x)=120,000 \times (1.055)^{x}$ .

6 0

3 years ago

Read 2 more answers

46/23 in simplest form

xz_007 [3.2K]

The answer will be 2.

46 / 23 is 2.

http://coolconversion.com/math/fractions-simplifier/Reduce__46/23_to%20the%20simplest%20form

This proves my answer.

3 0

3 years ago

A number x divided by 7 is less than −3.

agasfer [191]

Answer:

x<-21

Step-by-step explanation:

x/7<-3

x<-21

7 0

4 years ago

Read 2 more answers

wendy and rick left the library at noon and cycled 480 meters to the town hall . wendy cycled at a spees of 80 meters per minute

LenKa [72]

Cycled 480 meters but after cycling 0.25 of the distance Wendy stopped and waited for Rick to catch up

0.25 (480) = 120 meters

Wendy cycled at a speed of 80 meters per minute = 120 /80 = 1.5 minutes
Rick's speed was 20 meters per minute slower than Wendy's = 120 / 60 = 2 minutes

so 2 minutes - 1.5 minutes = 0.5 minutes

answer
Wendy waited 0.5 minutes for Rick

4 0

3 years ago

Researchers are interested if a school breakfast program leads to taller children. Assume that the population of all 5 year-old

DedPeter [7]

Answer:

$39-1.96\frac{1}{\sqrt{25}}=38.608$

$39+1.96\frac{1}{\sqrt{25}}=39.392$

So on this case the 95% confidence interval would be given by (38.608;39.392)

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".

$\bar X=39$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

$\sigma=1$ represent the population standard deviation

n=25 represent the sample size

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)

The margin of error is given by:

$ME= z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$

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 tabel to find the critical value. The excel command would be: "=-NORM.INV(0.025,0,1)".And we see that $z_{\alpha/2}=1.96$

And replacing we got:

$ME= 1.96 *\frac{1}{\sqrt{25}}= 0.392$

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

$39-1.96\frac{1}{\sqrt{25}}=38.608$

$39+1.96\frac{1}{\sqrt{25}}=39.392$

So on this case the 95% confidence interval would be given by (38.608;39.392)

7 0

3 years ago