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yuradex [85]
4 years ago
7

If a small pipe takes 9 hours to fill a pool and a large pipe takes 3 how long will it take them together

Mathematics
1 answer:
Kay [80]4 years ago
6 0
It would take them 3 hours 
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An experiment consists of drawing 1 card from a standard 52 card deck. let e be the event that the card drawn is a red card. fin
Lelechka [254]

The probability of drawing a red card from a standard deck of cards is 1/2.

Given that there is a standard deck of cards.

We are required to find the probability of drawing a rd card from a standard deck of cards.

Probability is the calculation of chance of happening an event among all the events possible. It lies between 0 and 1. It cannot be negative.

Probability=Number of items/Total items.

Total number of cards=52

Number of red cards =26

Number of black cards=26

Probability of drawing a red card =Number of red cards/ Total cards.

=26/52

=1/2

Hence the probability of drawing a red card from a standard deck of cards is 1/2.

Learn more about probability at brainly.com/question/24756209

#SPJ4

3 0
2 years ago
Enter the unknown value that makes this statement true: <br><br> (blank) is 30% of 20
cupoosta [38]

Answer:

Six

Step-by-step explanation:

Six is thirty percent of twenty.

8 0
3 years ago
Someone please help me
pentagon [3]

Answer:

Option 3 or Option 4.

Step-by-step explanation:

I have this doubt because actually, a rhombus with a right angle (one) is not necessarily a square. Some rhombuses have one right angle and are still not squares. Now, if the four angles are right, it is a square, but this only says one.

On other hand, a parallelogram with congruent diagonals isn't a square necessarily either. Rectangles have congruent diagonals and are parallelograms.

In case you only can answer with one, I'll say is option 3, hope it helps!

 

8 0
3 years ago
HELP I NEED HELP ASAP
Pani-rosa [81]

Answer:

i think it's "c" if u check y=6 x= 2

Step-by-step explanation:

so if u insert 2 in the formula c you get 6

4 0
3 years ago
Read 2 more answers
There are five marbles in a bag. Three are green and two are yellow. You draw a
algol13

Answer: 2/5 chance

Step-by-step explanation: Since there are 5 marbles and 3 aren't yellow, you have a 2/5 chance to choose the other two yellow marbles

7 0
3 years ago
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