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tresset_1 [31]
3 years ago
6

A bag contains 80 marbles: 40 are red, 20 are blue, and 20 are black. what is the probability of selecting a red or blue marble

at random
Mathematics
1 answer:
DedPeter [7]3 years ago
4 0
40 % out of 80 for red
20% out of 80 for blue
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A pet shop manager wants the same number of birds in each cage he wants to use as few cages as possible but he can only have one
anastassius [24]

Since there are more parakeets than canaries, it is not possible to have only 1 of each bird in each cage <u>and</u> have the same number of birds in each cage.

He could use 42 cages, putting a canary in with the parakeet in 18 of them. Then he would have 18 cages with 2 birds each, and 24 cages with 1 bird each.

The only way to have the same number of birds (1) in all cages is to have 60 cages, 42 of which have 1 parakeet, and 18 of which have 1 canary.

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If more than 1 of each kind of bird can be put in the cage, the collection of birds could be put into 6 cages, each of which would be home to 7 parakeets and 3 canaries.

4 0
3 years ago
7 cards are drawn from a standard deck of 52 playing cards. How many different 7-card hands are possible if the drawing is done
Vladimir [108]

Answer:

The number of different 7 card hands possibility is  133784560

Step-by-step explanation:

The computation of the number of different 7 card hands possibility is shown below:

Here we use the combination as the orders of choosing it is not significant

So,

The number of the different hands possible would be

= ^{52}C_7

= 52! ÷ (7! × (52 - 7)!)

= 133784560

Hence, the number of different 7 card hands possibility is  133784560

4 0
3 years ago
What is 5.6 as a fraction or mixed number in simplest form
Step2247 [10]

5.6 is a mixed fraction is...

5.6= 5 3/5

8 0
3 years ago
Evaluate f(2) for the function f(x) = 3x2 + 2x - 5
Shalnov [3]

Answer:

The answer for f(2) is 11.

Step-by-step explanation:

f(x) = 3x2 + 2x - 5

f(2) = 3(2)2 + 2(2) - 5

f(2) = 6(2) + 4 - 5

f(2) = 12 + 4 - 5

f(2) = 16 - 5

f(2) = 11

3 0
3 years ago
Read 2 more answers
The product of 4 and n is -48 translate the sentence into equation
fiasKO [112]
4 times n=-48
4n=-48
that is the translateion

5 0
3 years ago
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