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lana [24]
3 years ago
8

The ratio of boys to girls at a summer camp 3:5. If there are 27 boys,how many girls are there ?

Mathematics
2 answers:
Damm [24]3 years ago
8 0
Maybe 45 because 3×9=27 and 5×9=45
GarryVolchara [31]3 years ago
5 0

g-number\ of\ girls\\\\3:5=\dfrac{3}{5}\\\\The\ equation:\\\\\dfrac{27}{g}=\dfrac{3}{5}\qquad\text{cross multiply}\\\\3g=(27)(5)\qquad\text{divide both sides by 3}\\\\g=(9)(5)\\\\\boxed{g=45}\\\\Answer:\ \boxed{45\ girls}

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Discrete MathA coin is flipped four times. For each of the events described below, express the event as a set in roster notation
Vladimir79 [104]

Answer:

a) 25%

b) 50%

c) 87.5%

Step-by-step explanation:

There are 2^4 = 16 number of outcome in total.

a)First and last flips come up heads. There are 4 outcomes here. Probability of the event is 4/16 = 1/4, or 25%.

- HHHH

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b) at least 2 Consecutive flips that is heads. There are 8 outcomes. Probability of event is 8/16 = 1/2, or 50%

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c) At least 2 consecutive flips that are the same. There are 14 outcomes. Probability of 14/16 = 7/8, or 87.5%

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6 0
3 years ago
Michael uses a uniform probability model for an experiment using a deck of 45 cards. There are 15 blue card, 15 red cards, and 1
vampirchik [111]

Answer:

<em>P</em> = 2/3

Step-by-step explanation:

45 cards in all

15 blue

15 red

15 green

To figure out the probability of red and blue together, add red and blue.

15 + 15 = 30

Since the total is 45, this is how many 30 will be out of.

30 out of 45 = 30/45

Simplify 30/45 by dividing each side by 15

30 ÷ 15 = 2

45 ÷ 15 = 3

30/45 = 2/3

6 0
3 years ago
How much is 80% from 250.00
rodikova [14]
If you need further help on how they got the answer, this equation will take more time, but it will also help you understand these types of problems. Part÷Whole=Percent÷100
Part= X because it is what you are trying to find.
Whole=250 because it is what you are taking the percentage of.
Percent=80
Now you have:
X÷250=80÷100
Set this up in fraction form and cross multiply.
You get:
100x=250×80
250×80=20,000
100x=20,000
X=200
3 0
3 years ago
Read 2 more answers
Evaluate g(n- 7) if g(x) = x^2-6/7x
noname [10]

Step-by-step explanation:

g(n-7) = (n-7) ^2-6/7 (n-7) = n^2 -14n+49-6/7 n +6= n^2-104/7 n +55

5 0
3 years ago
What is 43 x 34/ 28-14= <br> this /stands for a division sine
Sergio [31]
This is the answer 104.4285714285714
6 0
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