Which of the following is an example of a rational number?

Mathematics

1 answer:

ivolga24 [154]2 years ago

6 0

<h3>Answer: Choice B</h3>

==================================================

Explanation:

Using your calculator, you should find that

sqrt(125) = 11.1803 approximately
sqrt(196) = 14 exactly
sqrt(207) = 14.387 approximately
sqrt(220) = 14.832 approximately

Each approximate result has its decimal digits go on forever without any pattern. So we cannot write those values as a fraction of two integers. The decimal expansion must have some kind of pattern that repeats forever, so we could consider it rational.

Only choice B results in a whole number. The value 14 is the same as 14/1, showing it can be written as a fraction of two integers. Therefore choice B is rational.

You might be interested in

A function has a discriminant of 25.<br> How many x-intercepts does it have?

zlopas [31]

Answer:

Step-by-step explanation:

If the value of the discriminant is positive, there are two real solutions for x, meaning the graph of the solution has two distinct x-intercepts

Here 25 is positive discriminant, hence the function will have 2 x - intercepts

8 0

2 years ago

7 ounce- 4.58$<br> 15 ounce- 6.30$<br> Find the unit rate of both numbers

Zielflug [23.3K]

Answer:

7 ounces-4.58 = 1 ounce-0.654....

15 ounces-6.30= 1 ounce- 0.42

Explanation:

Divide 4.58 and 7 and divide 6.30 and 15.

And you get your answers.

I think im not really good with unit rate.

5 0

2 years ago

A letter L with a height of 9 inches is drawn on the actual flag. What should be the height and inches of a letter L in the scal

NISA [10]

Answer:

0.5 inch on the drawing

Step-by-step explanation:

The following information is missing:

<em>The scale factor of the drawing to the actual flag is represented by the ratio 1:18. </em>

This scale factor means that 1 inch on the drawing are equivalent to 18 inches o n the actual flag. We want to know the height on the drawing, given that a height of 9 inches is drawn on the actual flag. The following proportion must be satisfied:

1 inch on the drawing / x inch on the drawing = 18 inches o n the actual flag / 9 inches o n the actual flag

x = 9/18 = 0.5 inch on the drawing

6 0

2 years ago

5/12-1/9 can you help me?

bezimeni [28]

Answer: 11/6

Step-by-step explanation:

5/12 - 1/9=?

$\frac{5*3}{12*3}-\frac{1*4}{9*4}\\\\\frac{15}{36}-\frac{4}{36}= \\\\15-4=11\\Answer: \frac{11}{36}$