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3 years ago

Help me #no spams..

Mathematics

2 answers:

loris [4]3 years ago

6 0

Answer:

31.41

Step-by-step explanation:

<h2><u><em>PLEASE MARK AS BRAINLIEST!!!!!</em></u></h2>

artcher [175]3 years ago

3 0

Answer:

62.38

Step-by-step explanation:

1. decimal with 2 decimal places (.XX)

2. less than 100 (XX.XX)

from here, let's assign variables to our number: AB.CD

C = 1,3,5

A = 3B

D = A + B (must be less than 9)

A = 2C

with these limitations, we can extrapolate that A must be divisible by both 2 and 3. what number less than 9 has these factors? <u>6</u>

A = 6

this means that B = 2 and C = 3

and, now with A and B, D = 8

so, putting them all together: AB.CD = <u>62.38</u>

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Help please! This has to do with the Pythagorean theorem.

Alex Ar [27]

The answer is 14.87.
a^2+b^2=c^2

10^2+11^2=c^2

100+121=c^2

221=c^2

Square root both sides

14.87=c
Hope this helps!!

7 0

3 years ago

What is indicated by arrowheads on a line

Molodets [167]

Arrowheads indicate that the line will continue traveling on a number line infinitely. In other words the line never ends.

7 0

3 years ago

Read 2 more answers

In the table below, x represents the miles traveled and y represents the cost to travel by train.

Afina-wow [57]

Answer:

Third option

m = 2.25

Step-by-step explanation:

The slope of the function is equal to its rate of change between two points.

For example, for a couple of points $(x_1, y_1),\ (x_2, y_2)$

The slope is:

$m =\frac{y_2-y_1}{x_2-x_1}$

In this problem we have the following points

1.(2, 8.50) , 2. (5, 15.25), 3. (8, 22.00) , 4. (12, 31.00)

We calculate the slope between the first two points

$m =\frac{15.25-8.50}{5-2}=2.25$

We calculate the slope between the points 3 and 4

$m =\frac{31-22}{8-4}=2.25$

We calculate the slope between the points 2 and 3

$m =\frac{22-15.25}{8-5}=2.25$

The slope is always the same. Therefore m is constant and the fution is a line of slope m = 2.25

7 0

3 years ago

Read 2 more answers

34 packages are randomly selected from packages received by a parcel service. The sample has a mean weight of 25.9 pounds and a

Vlad1618 [11]

Answer:

24.6 < μ < 27.2

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 1.96\frac{3.8}{\sqrt{34}} = 1.3$

The lower end of the interval is the sample mean subtracted by M. So it is 25.9 - 1.3 = 24.6 pounds.

The upper end of the interval is the sample mean added to M. So it is 25.9 + 1.3 = 27.2 pounds.

So the correct answer is:

24.6 < μ < 27.2

4 0

3 years ago

Round the number 95,498 to the ten thousands place value

dezoksy [38]

100,000 (sorry if I'm wrong)

8 0

4 years ago

Help me #no spams.. ​

Help me #no spams..