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3 years ago

Which of the following graphs represents a porprtional relationship?

Mathematics

1 answer:

Brums [2.3K]3 years ago

5 0

Answer:

Step-by-step explanation:

To determine whether x and y have a proportional relationship, see if the line passes through the origin (0, 0).

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1. Find the perimeter of 15 cm 10 cm 18 cm

xz_007 [3.2K]

It’s 43 cm because you add all the sides

8 0

3 years ago

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If the side length of square ABCD is four times the side length of square PQRS, which statement is true?

lyudmila [28]

Answer:

i think the answer is A

Step-by-step explanation:

Because it says four times and 4 times 4 =16

sorry tried my best(don't write this part down)lol

3 0

4 years ago

A trigonometric function compares the lengths of two sides of a right triangle. A trigonometric ratlo relates the angles of a tr

sweet [91]

Answer:

true

Step-by-step explanation:

no false sorry

4 0

3 years ago

Read 2 more answers

In what different ways can 45 be written as the product of two positive integers?

nevsk [136]

First you need to know its common factors.

They are: 1, 3, 5, 9, 15, 45

And 45 = 1*45 = 3*15 = 5*9

So there should be 3 ways in total

4 0

4 years ago

153 of the 258 high school students surveyed at a local school said they went outside more during school hours as elementary sch

Juli2301 [7.4K]

Answer-

It is reasonable that the state education department claims the percentage for the entire state is 63%.

Solution-

153 out of the 258 high school students surveyed at a local school said they went outside more during school hours as elementary school students than they do now as high school students.

Here,

x = 153,

n = 258,

Then,

$\text{sample proportion}=p=\dfrac{153}{258}=0.5930=59.30\%$

And,

$\text{Margin Error}=2\times \sqrt{\dfrac{p(1-p)}{n}}$

Putting the values,

$\text{ME}=2\times \sqrt{\dfrac{(0.5930)(1-0.5930)}{258}}\\\\=2\times \sqrt{\dfrac{(0.5930)(0.407)}{258}}\\\\=2\times \sqrt{\dfrac{0.2414}{208}}\\\\=2\times 0.0341\\\\=0.0682\\\\=6.82\%$

The interval would be,

$=(59.30-6.82,\ 59.30+6.82)\\\\=(52.48,\ 66.12)$

As population proportion p=63% lies in this interval, so it is reasonable.

5 0

4 years ago