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3 years ago

If A=(3,9] and B= [6,9) then find A u B

1 answer:

5 0

U means "Union" or all the numbers from one set and all the numbers from the other set combined. So your answer is any of the numbers included in one set or the other or both.

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In RSM camp, there are four counselors for every fifty seven students and three teachers for every five counselors. Chapter Refe

max2010maxim [7]

The number of students attending the camp that summer is 380 students

Step-by-step explanation:

There are four counselors for every fifty seven students

There are three teachers for every five counselors

Ms. Rifkin asked all 16 teachers present at the camp to attend a

teachers meeting

To solve this question we will use the ratio

The given is:

1. 4 counselors for every 57 students

2. 3 teachers for every 5 counselors

3. There are 16 teachers

At first let us find the 16 teachers are for how many counselors

∵ 3 teachers : 5 counselors

∵ 16 teachers : x counselors

∴ $\frac{3}{5}=\frac{16}{x}$

By using cross multiplication

∴ 3x = 16 × 5

∴ 3x = 80

Divide both side by 3

∴ x = $\frac{80}{3}$

Then let us find the $\frac{80}{3}$ counselors are for how many students

∵ 4 counselors : 57 students

∵ $\frac{80}{3}$ counselors : y students

∴ $\frac{4}{57}=\frac{80/3}{y}$

By using cross multiplication

∴ 4y = 57 × $\frac{80}{3}$

∴ 4y = 1520

Divide both sides by 4

∴ y = 380 students

The number of students attending the camp that summer is 380 students

Learn more:

You can learn more about the ratio in brainly.com/question/6952762

#LearnwithBrainly

4 0

3 years ago

Last night, the two dinner specials at Bruce's favorite restaurant were salmon filet and steak. The restaurant served 30 special

HACTEHA [7]

Answer:

Step-by-step explanation:

100% represents 30

What about 40%

100%=30

Cross mutiply you get 12

3 0

3 years ago

Given that Triangle ABC ~ DEF, solve for X.

Vadim26 [7]

Answer:

x = 7

Step-by-step explanation:

if ABC ~ DEF than AB ~ ED, AC ~ DF, and CB ~ FE

The ratio of AB to ED is given as 5/30 = 1/6

For AC ~ ED the ratio would be same x/42 = 1/6 cross multiply it

6x = 42

x = 7

6 0

3 years ago

Distribute: 5(2x + 3)

gtnhenbr [62]

Answer:
3(2x - 5) =

WHY?
Distributive property.
You should multiply the outer number to each of the values inside ( and ). So that's 3 multiplied by 2x and 3 multiplied by 5. That's 6x-15.

5 0

3 years ago

Read 2 more answers

when b>1, as x grows in the negative direction, y ( increases, decreases, or stays the same). When 0

FinnZ [79.3K]

Answer:

decrease, increase

Step-by-step explanation:

8 0

3 years ago