Ask question

Ask question

All categories

3 years ago

11

Kelsy climbs up a volcano. When she is a quarter of the way up the volcano she is at a height of 125 m. How high is Kelsy from t

he bottom when she is 75 m below the top of the volcano?

2 answers:

cestrela7 [59]3 years ago

8 0

To find the height, multiply 125 by 4 and subtract 75 to find 75m below the top
125 x 4-75=425m

Leviafan [203]3 years ago

3 0

She is 425 feet above the sea level, or the starting level.

You might be interested in

[5x+10y+15z=60<br> [2x+4y+6z=60<br> [x+2y+3z=60

Alla [95]

9514 1404 393

Answer:

no solution

Step-by-step explanation:

The equations are inconsistent. The set of equations reduces to ...

x + 2y + 3z = 12

x + 2y + 3z = 30

x + 2y + 3z = 60

No values of x, y, and z can satisfy all three equations. There is no solution.

4 0

2 years ago

Please help. i will kiss u

kenny6666 [7]

Answer:

The area of the figure is 7.5 $units^2$ .

Step-by-step explanation:

In order to make the calculation process easier, you can cut the shape into a trapezoid and a triangle. The triangle's base has a length of 3 units and a height of 2 units, so its area is 3 $units^2$ . The top base of the trapezoid has a length of 1 unit, the bottom base of the trapezoid has a length of 2 units, and the trapezoid has a height of 3 units, so the area of the trapezoid is 4.5 units. To find the area of the shape, add the areas of the trapezoid and the triangle together, which is 3 + 4 .5 = 7.5

4 0

3 years ago

It says graph ×< 1 btw

Ymorist [56]

Start at 1 and drag it towards the end of the negative side :)

6 0

3 years ago

Question 3(Multiple Choice Worth 4 points)

nlexa [21]

The cost of Zero bags of candy :) hope this helped

4 0

2 years ago

Read 2 more answers

A sample of 16 eggs yields a sample mean weight of 3.00 ounces and a sample standard deviation = 0.360 ounces, find the margin o

shusha [124]

Answer:

$ME =1.753\frac{0.360}{\sqrt{16}}= 0.158$

$3-1.753\frac{0.360}{\sqrt{16}}=2.842$

$3+1.753\frac{0.360}{\sqrt{16}}=3.158$

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".

$\bar X=3$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

s=0.360 represent the sample standard deviation

Solution to the problem

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

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

In order to calculate the critical value $t_{\alpha/2}$ we need to find first the degrees of freedom, given by:

$df=n-1=16-1=15$

Since the Confidence is 0.90 or 90%, the value of $\alpha=0.1$ and $\alpha/2 =0.05$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.05,15)".And we see that $t_{\alpha/2}=1.753$

The margin of error is given by:

$ME =1.753\frac{0.360}{\sqrt{16}}= 0.158$

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

$3-1.753\frac{0.360}{\sqrt{16}}=2.842$

$3+1.753\frac{0.360}{\sqrt{16}}=3.158$

So on this case the 90% confidence interval would be given by (2.842;3.158)

3 0

3 years ago