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2 years ago

Help me please i dont understand this

Mathematics

1 answer:

faltersainse [42]2 years ago

8 0

Firstly find two coordinates that lie on the line, we have (0,6) and (8,10).

Slope= (y2-y1)/(x2-x1)
= (10-6)/(8-0)
= 4/8
= 1/2

The answer is B

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Which of the statements using operations on rational or irrational numbers always results in a rational number?

-BARSIC- [3]

<h3>Hm a irrational number is a number like this:</h3>

$1.999999\inf$

So adding a rational number, like 2, it would be irrational still:

$2+1.999999\inf=3.999999\inf$

That being said, answer C is wrong

Now, what is 2/2? Or 4/1? Whole numbers are one of the 3 types of rational numbers.

$2\ /\ 2=1\\\\4\ / 1=\ 4$

Thus the answer appears to be D

Now lets use the process of elimination to double check the answer:

The wording of your question is what will help us out here:

Which of the statements using operations on rational or irrational numbers <u>always results </u>in a <u>rational number?</u>

Because of that, any of the choices that involve a irrational number can result with another irrational number like so:

$a)\ 1.999\inf+ 1.999\inf=3.888\inf\\\\b)\ 2.999\inf / 1.999\inf= 1.50025\inf$

And there you go, the only answer that hasn't been proven wrong is answer D.

<h3>Now, if you like this answer and would like to see more please make sure to Like, Comment, and Rate this answer! Also, be sure to send me a friend request, I'm always up for a Challenge!</h3><h2>Thanks!</h2>

8 0

2 years ago

Find the surface areas of sphere with a radius of 100 ydz

PtichkaEL [24]

We know that

[surface area of sphere]=4*pi*r²
for r=100 yd
[surface area of sphere]=4*pi*100²-----> 40000*pi yd²

the answer is
40000*pi yd²

8 0

3 years ago

The triangle shown here appears to be, A) acute.

marishachu [46]

It has a right angle in it meaning it is a right triangle.

3 0

2 years ago

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A locker combination has three nonzero digits, and digits cannot be repeated. If the first two digits are even, what is the prob

jonny [76]

Depends on the size of the lock, some locks go to 50 while others got to 40 it would 20/40

7 0

3 years ago

One argument against the American standard system of measurement is a lesser degree of accuracy than that of the metric system.

densk [106]

In this item, we are to divide one (1) inch into 16 equal parts to be able to conclude that American standard system is less accurate than the metric system.
16 parts of 1 inch = 1 inch / 16 = 0.0625 inch

This in itself is already a proof enough that there are 4 decimal places after the decimal point which makes this hard to properly measure.

Whereas, if we are to divide a centimeter into the millimeters, we will have 10 equal parts and that would be 1 mm = 0.1 cm.

The number above only has one decimal place and the level of accuracy should be higher.

5 0

2 years ago

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Help me please i dont understand this​

Help me please i dont understand this