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2 years ago

If X and Y are 2 finite sets such that n() = 9, n( XY) - 4 and n( XY) -15, then n() is

Mathematics

1 answer:

Artist 52 [7]2 years ago

8 0

Answer:

I think it's a hope this helps

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True or false: f(x) is a function. 0 3 4 2 8 12 0 f(x) A. True B. False

Lady_Fox [76]

Answer: true

Step-by-step explanation: f(x) is a function because each x value (left oval) has one y value (right oval)!

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3 years ago

What are the angle measures of triangle ABC?

Schach [20]

The angle measures of triangle ABC is ∠A=90°, ∠B= 60°, ∠C = 30°. Thus, the correct option is B.

<h3>What is a triangle?</h3>

A triangle is a three-edged polygon with three vertices. It is a fundamental form in geometry. The sum of all the angles of a triangle is always equal to 180°.

As it is known that the angles of the triangle are 30°, 60°, and 90°. Therefore, the largest angle is 90° which will be the opposite of the largest side of the triangle, therefore, the measure of ∠A=90°.

Also, the shortest angle of the triangle is 30°, which will lie at the opposite of the smallest side of the triangle, therefore, the measurement of the ∠C=30°.

Now, the angle left is ∠B therefore, the measure of ∠B=60°.

Hence, the angle measures of triangle ABC is ∠A=90°, ∠B= 60°, ∠C = 30°. Thus, the correct option is B.

Learn more about Triangle:

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4 0

2 years ago

It takes nate four hours to paint a wall and it takes jill seven hours to paint the same wall about how many hours will it take

loris [4]

If Nate paints the wall in 4 hours, it means that he can paint 1/4 of the wall every hour.

Similarly, if Jill paints the wall in 7 hours, it means that he can paint 1/7 of the wall in one hour.

So, together, they paint the following fraction of the wall in one hour:

$\frac{1}{4}+\frac{1}{7} = \frac{4+7}{28} = \frac{11}{28}$ .

At this rate, they need 28/11 hours to paint the whole wall, in fact, after that amount of time they paint

$\frac{11}{28}\frac{28}{11} = 1$

i.e. the whole wall

7 0

3 years ago

Next → Post Test: The Pythagorean Theorem and Volume

Arte-miy333 [17]

X= 95°
Y= 133°
Z= 128°

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2 years ago

Which of the following numbers is a whole number? 1.) 0.3 2.) -2/3 3.) -8 4.) 3

Snowcat [4.5K]

Answer:

Step-by-step explanation:

A whole number is not a decimal or a fraction (unless the fraction can be simplified to a whole number). A whole number is also not negative. That would make it an integer.

7 0

3 years ago