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Alika [10]
3 years ago
14

Please help me with this

Mathematics
2 answers:
Ipatiy [6.2K]3 years ago
6 0

Answer:

1. Title: Number of Hours Soccer was Practiced

Label X: Hours Label Y: Names of Maria's Friends

3. David practices the most

4. Jessie and Victor

qaws [65]3 years ago
4 0

Answer:

2. David practices the most hours of soccer.

3. Jessie and Victor.

Step-by-step explanation:

3. On the x-axis, it shows that David practices the most hours out of all the friends.

2. This is just self explanatory!

You might be interested in
The Environmental Protection Agency (EPA) publishes fuel economy values that are known to be good estimates of the fuel economy
r-ruslan [8.4K]

Answer:

The 90% confidence interval for the mean combined fuel economy for Ford Explorers is between 22.95 and 23.63 mpg.

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 16 - 1 = 15

90% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 15 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.9}{2} = 0.95. So we have T = 1.7531

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 1.7531\frac{0.78}{\sqrt{16}} = 0.34

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 23.29 - 0.34 = 22.95 mpg

The upper end of the interval is the sample mean added to M. So it is 23.29 + 0.34 = 23.63 mpg

The 90% confidence interval for the mean combined fuel economy for Ford Explorers is between 22.95 and 23.63 mpg.

7 0
2 years ago
A wildfire is spreading at an alarming rate. The wildfire begins at a size of 8 square feet. It then doubles its width every x h
Mrac [35]

Answer:

D.

14000=8\times 2^{x+y}

Step-by-step explanation:

The wildfire begins at a size of 8 square feet

It means that initial area =8

It then doubles its width every x hours,

and doubles its length every y hours

so, we can set up equation

A(x,y)=8(2)^x\times (2)^y

now, we can simplify it

A(x,y)=8(2)^{x+y}

we are given

After a period of time, the wildfire covers 14,000 square feet

so, we can set A(x,y)=14000

we get

14000=8(2)^{x+y}

14000=8\times 2^{x+y}

7 0
3 years ago
Please help! Will give brainliest!
Oksi-84 [34.3K]

Answer:

its 124 because I did the the math

5 0
3 years ago
Can someone help me on number 20
expeople1 [14]
The answer is eleven
6 0
2 years ago
Read 2 more answers
3. List the coefficients in the expression below. 14x - 7x + 1-2x​
elena-14-01-66 [18.8K]

Answer:

14, -7, -2

Step-by-step explanation:

<u>The coefficient is the number that multiplies the variable, so list the numbers that fall under that definition:</u>

14x - 7x + 1 - 2x

↑      ↑          ↑

14    -7         -2

<u>The coefficients in the expression are </u><u>14, -7, and -2.</u>

7 0
2 years ago
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