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3 years ago

Please answer thank you

Mathematics

1 answer:

mariarad [96]3 years ago

4 0

Answer:

0. If it's a horizontal line, then the slope if automatically 0. if the line went straight up the slope would be "no slope" or "unidentified" your problem has a horizontal line so the slope is 0

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13x100=what......<br><br> .......

Orlov [11]

13×100=13,000 simple :)

4 0

4 years ago

Read 2 more answers

A statistics teacher started class one day by drawing the names of 10 students out of a hat and asked them to do as many pushups

mash [69]

Using the t-distribution, we have that the 95% confidence interval for the true mean number of pushups that can be done is (9, 21).

For this problem, we have the <u>standard deviation for the sample</u>, thus, the t-distribution is used.

The sample mean is of 15, thus $\overline{x} = 15$ .
The sample standard deviation is of 9, thus $s = 9$ .
The sample size is of 10, thus $n = 10$ .

First, we find the number of degrees of freedom, which is the one less than the sample size, thus df = 9.

Then, looking at the t-table or using a calculator, we find the critical value for a 95% confidence interval, with 9 df, thus t = 2.2622.

The margin of error is of:

$M = t\frac{s}{n}$

Then:

$M = 2.2622\frac{9}{\sqrt{10}} = 6$

The confidence interval is:

$\overline{x} \pm M$

Then

$\overline{x} - M = 15 - 6 = 9$

$\overline{x} + M = 15 + 6 = 21$

The confidence interval is (9, 21).

A similar problem is given at brainly.com/question/25157574

6 0

3 years ago

The drama club is selling tickets to its play. An adult ticket costs $15 and a student tickets costs $11. The auditorium will se

Tema [17]

B) thats the only one i could think of that would even sound right

4 0

3 years ago

Eric, Shenna, and Yael are playing a game. Eric has half as many points as Shenna. Shenna has three fewer points than Yael. Alto

Anon25 [30]

Using algebraic equations, the number of points Yael has is calculated as: 29 points.

<h3>How to Use Algebraic Equations to Solve Word Problems?</h3>

In the given world problem, we known the following:

E = Eric

S = Shenna

Y = Yael

Their total points would be: E + S + Y = 68

S = 2(E) (Shenna has twice the points of Erik)

Y = S + 3 (Yael has three points more than Shenna)

We would therefore have the following algebraic equation:

E + 2E + (S + 3) = 68

Substitute S with 2E

E + 2E + 2E + 3 = 68

Solve for E

5E + 3 = 68

5E = 68 - 3

5E = 65

5E/5 = 65/5

E = 13

Eric's points is: 13

Yael's points = Y = S + 3

Y = S + 3 = 2E + 3

Plug in the value of E

Y = 2(13) + 3

Y = 26 + 3

Y = 29

Yael has 29 points.

Learn more about algebraic equation on:

brainly.com/question/2164351

#SPJ1

5 0

1 year ago

Express Courier Service has found that the delivery time for packages is normally distributed, with mean 13 hours and standard d

Sladkaya [172]

Answer:

Step-by-step explanation:

Express Courier Service has found that the delivery time for packages is normally distributed. So we use

z = (x - mean)/standard deviation

mean = 13

standard deviation = 2

x = time of delivery in hours

a) P(0 lesser than/equal to 18)

z = (18-13)/2 =5/2 = 2.5

Using the normal distribution table, the value is 0.9938

b) to be 95% sure, let the time be t

From the table, the equivalent of z that is 0.95 = 1.645

So 1.645 = (t-13)/2

t-13 = 3.29

t = 3.29+13= 16.29 hours

8 0

3 years ago