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Lelu [443]
3 years ago
12

I attached a photo for this question

Mathematics
1 answer:
klasskru [66]3 years ago
4 0

Answer:

In order to prove that these numbers are all rational, you must be able to express then as a fraction, \frac{a}{b}, where b ≠ 0.

Firstly, in order to turn 3 into a fraction, remember that any number divided by 1 is 0. Therefore, 3 as a fraction can be expressed as \frac{3}{1}.

This satisfies the criteria: A fraction in the form \frac{a}{b}, where b ≠ 0.

Next, -2. Same with 3, any number over itself is 1. -2 as a fraction is -\frac{2}{1}. This, again, satisfies the given definition for a rational number.

Now, the more challenging one, -0.75.

It is likely a commonly known fact that 0.75 is equal to three quarters, but I will show the formal way to convert decimals to fraction, just in case in the future there is some other confusing decimal that isn't that commonly seen.

For terminating decimals (ones that do not go on forever), you can simply put it over 1, then multiply it by 100:

-0.75

= -\frac{0.75}{1}

Multiply that by 100:

-\frac{75}{100}

We could simplify this fraction further, but that is enough to show that -0.75 is a rational number: it fits the given definition!

I hope this helps you out! If you still have any questions, you can reply to this answer :)

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Round off the following numbers to the nearest thousand. 19. 674,620 20. 355,500
Oksana_A [137]

Answer:

1) 675,000.

2) 356,000

Step-by-step explanation:

There are some rules to round off to the nearest thousand.

1. While rounding off to the nearest thousand, if the digit in the hundreds place is between 0 – 4 i.e., < 5, then the hundreds place is replaced by ‘0’.

2. If the digit in the hundreds place is = to or > 5, then the hundreds place is replaced by ‘0’ and the thousands place is increased by 1.

We have given two numerals:

1)<u> 674,620</u>

According to the second rule defined the digit at the hundreds place is greater than 5 than the thousands place will be increased by 1.

The answer is 675,000.

2) <u>355,500</u>

According to the second rule defined the digit at the hundreds place is greater than 5 than the thousands place will be increased by 1.

The answer is 356,000....

4 0
3 years ago
Can someone please do this for me?
san4es73 [151]

Answer:

64°

Step-by-step explanation:

<em>So supplement angles are equal to 180, so first our two angles added together will be 180:</em>

x + x = 180

<em>Now one of these angles is 6 greater than half:</em>

x + (x/2 + 6) = 180

<em>Then we will solve for x:</em>

x + (x/2 + 6) = 180

x + x/2 + 6 = 180

x + x/2 = 174

\frac{3}{2}x = 174

x = 116

<em>Plug it back in:</em>

x + (x/2 + 6) = 180

         /\

     x/2 + 6

   (116)/2 + 6

        64

<em>To check:</em>

116 + 64 = 180 ✓

6 0
3 years ago
Help solve ?<br> Need answer soon
galina1969 [7]

Answer:

A.

Step-by-step explanation:

It seems and makes the most sense. Anyways have a nice day/night :). Also if you can may I please have brainliest

6 0
3 years ago
A bus makes 28 stops every 2 hours how many stops does it make in 3 hours
denis-greek [22]
28÷2=14
The bus makes 14 stops every hour
14×3=42
The bus makes 42 stops in 3 hours

Hope my answer helped u :)
6 0
3 years ago
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Find the inequality represented by the graph
nlexa [21]

Answer:all you need to do is Times everything

Step-by-step explanation:

7 0
2 years ago
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