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1 year ago

Use the Venn diagram shown

Mathematics

2 answers:

Zolol [24]1 year ago

8 0

Answer: {9, 17}

Step-by-step explanation:

$A \cup B$ denotes the union of the sets A and B (all the distinct elements in either set)

$(A \cup B)'$ denotes the complement of the union of sets A and B (the elements in the universal set but not in the union).

So, the answer is {9, 17}.

neonofarm [45]1 year ago

3 0

Answer:

Third Option: {9, 17}

Step-by-step explanation:

(A∪B) means "the union of A and B". This means the question is asking for every point in both A and B.

The apostrophe (') symbol, in this situation, means "except for", for lack of a better term. So this question asks for everything except for what's inside A and B.

The only points here that are NOT within the circles A and B are 9 and 17.

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Last year , there were 30 male members and 20 female members in a Chess Club . This year , the number of male members is decreas

LekaFEV [45]

The r% of a quantity x is computed by dividing x in 100 parts, and considering r of such parts. So, the r% of the male is

$30\times\cfrac{r}{100} = 0.3 r$

and similarly, the r% of female is

$20\times\cfrac{r}{100} = 0.2 r$

The number of males decreased by this quantity, so now it is

$30 - 0.3r$

and the number of female increased by this quantity, so now it is

$20+0.2r$

we know that these two new counts are the same number, so we can build and solve the equality

$30 - 0.3r = 20+0.2r$

Subtract 20 and add 0.3r from both sides:

$10 = 0.5r$

Divide both sides by 0.5 to solve for r:

$r = 20$

Let's check the answer

The 20% of 30 is $30 \times \frac{20}{100} = 6$ , while the 20% of 20 is 4. So, we are stating that $30-6 = 20+4$ which is true because both expressions evaluate to 24.

7 0

3 years ago

Write a proportion that could be used to solve for each variable. Then solve.

iren [92.7K]

60/25 = 12/Y
cross multiply and divide

25 x 12 = 300

300 / 60 = 5

Y = 5 boxes

4 0

3 years ago

I have no idea how to do this, pls help. Question in the picture. Please show your work. Thanks!

geniusboy [140]

Answer:

Step-by-step explanation:

This is a stem and leaf plot. If you don't know what a stem and leaf plot is, try searching it before coming back and viewing the solution. I also see an "example" button. It might help to hit that too.

First, we sort the list of numbers. Here is what we get:

64, 66, 67, 68, 69, 74, 75, 76, 78, 79

Here, the stems are the tens digits and the leaves are the ones digits.

Therefore, for the stem 6, the leaves are:

4, 6, 7, 8, 9

For the stem 7, the leaves are:

4, 5, 6, 8, 9

The answer, I believe, is C

4 0

2 years ago

You are analyzing the allele frequencies for fur color in a population of squirrels where black fur is dominant to red fur. As p

kvasek [131]

Answer:

0.784

Step-by-step explanation:

Given that you are analyzing the allele frequencies for fur color in a population of squirrels where black fur is dominant to red fur.

As part of your research, you collect the following data:

Total individuals: 1,000

Red fur individuals: 216

So black fur individuals = $1000-216\\=784$

p2 = proportion of black fur individuals to total individuals

= $\frac{784}{1000} \\=0.784$

4 0

3 years ago

24) area= 16 pi inches squared<br><br>Find the circumference<br><br>It doesn't give any pictures

eduard

Answer:

8π in

Step-by-step explanation:

The Area of a Circle is πr². In this case, we're given the area as 16π, so the radius is 4 because the square root of 16 is 4.

The Circumference of a Circle is 2πr. Since the radius is 4:

$2*4 * \pi$
$8\pi$

Therefore, the circumference is 8π inches.

5 0

2 years ago