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olga nikolaevna [1]
3 years ago
8

there are 27 red or blue marbles in a bag. The number of red marbles is 5 less than 3 times the number of blue marbles. How many

red and blue marbles are in the bag?
Mathematics
1 answer:
Natasha2012 [34]3 years ago
7 0
8 blue marbles and 19 red
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A bottle contains 20 blue bags and 15 red bags. If two bags are picked at random one after the other with replacement, what is t
babymother [125]

Answer:

<h2> 12÷49</h2>

Step-by-step explanation:

The total number of bags in the bottle = 20 + 15 = 35

Then

the probability that the first bag is blue = 20/35

If we replace the first bag :

the probability that the second (picked) bag is blue = 15/35

Conclusion:

If two bags are picked at random one after the other with replacement

Then

the probability that the first bag is blue and then red is :

(20÷35)×(15÷35)

= (4÷7)×(3÷7)

= 12÷49

= 0.244897959184

7 0
2 years ago
A circular cardboard piece is needed for the base of a volcano model. The volcano is 46 centimeters tall and has a volume of 800
Alenkinab [10]
For this case we can model the problem as a cylinder.
 The volume of a cylinder is given by:
 V = Ab * h&#10;
 Where,
 Ab: base area
 h: cylinder height
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 800 = Ab * 46&#10;
 From here, we can clear the area of the base
 Answer:
 
An equation that can be used to find the area of the circular base is:
 
800 = Ab * 46
7 0
3 years ago
Read 2 more answers
What is the hcf of 12 45 and 75​
Butoxors [25]

Answer:

3

HCF of 12, 45 and 75 by Prime Factorization

As visible, 12, 45 and 75 have only one common prime factor i.e. 3. Hence, the HCF of 12, 45 and 75 is 3.

Step-by-step explanation:

4 0
2 years ago
Two parallel lines are crossed by a transversal. Horizontal and parallel lines p and q are cut by transversal m. At the intersec
egoroff_w [7]

Answer:

If two parallel lines are cut by a transversal, then the pairs of consecutive interior angles formed are supplementary . ... When two lines are cut by a transversal, the pairs of angles on either side of the transversal and outside the two lines are called the alternate exterior angles .

Step-by-step explanation:

hope this helps you :)

6 0
3 years ago
Read 2 more answers
2×y to the power2<br> -6×y to the power 2
sertanlavr [38]
2y to the second power= 4y
-6y to the second power= -36y
4 0
3 years ago
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