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VMariaS [17]
2 years ago
11

At a school 40% of the sixth graders students said that hip hop is their favorite kind of music. If 100 sixth graders students p

refer hip hop music, how many sixth graders are at the school?
Mathematics
2 answers:
oksian1 [2.3K]2 years ago
8 0

Answer:

If 100 students make up 40% of the 6th grade population, then 50 students make up 20% of the 6th grade population. 20% × 5 makes 100% so if your multiply 50 by 5 you'd get your population.

50 × 5 = 250 sixth-graders

alexandr1967 [171]2 years ago
5 0

Answer:

60 percent i'm sure

Step-by-step explanation:

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A swimming pool is 20 m long 15 m wide and 3 m deep. Find the cost of repairing the
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Cost of repairing the pool is

= Rs 12750

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Leah's house has a media room with a large flat-screen television to watch movies. The media room television has a width of 8 fe
Naddik [55]
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3 years ago
To the nearest​ dollar, the average tuition at a public four−year college was $3088 in 1997 and $3292 in 2000. ​Find, to the nea
Delicious77 [7]

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3 years ago
Can you help me with number 6? <br> Confused abit <br> Please
Sunny_sXe [5.5K]

You can see the three diagram attached. Each link is labeled with the probability: you have probability 1/6 that a six is rolled, and 5/6 that it is not rolled.


To answer the questions, find the path that brings you to the desired outcome, and multiply all the labels you meet.


First question:

To get three sixes, you have to choose the left path at each roll. The probability is always 1/6, so the answer is


\frac{1}{6} \times \frac{1}{6} \times \frac{1}{6} = \frac{1}{6^3}


Second question:

To get no sixes, you have to choose the right path at each roll. The probability is always 5/6, so the answer is


\frac{5}{6} \times \frac{5}{6} \times \frac{5}{6} = \frac{5^3}{6^3}


Third question:

To get exactly one six, it can either be the first, second or third roll.


In all cases, you have to choose the left path once and the right path twice: left-right-right mean that you get the six in the first roll, right-left-right means that you get the six in the second roll, right-right-left means that you get the six in the third roll.


In every case, the left turn has probability 1/6, and the right turn has probability 5/6. The probability of each combination is thus


\frac{1}{6} \times \frac{5}{6} \times \frac{5}{6} = \frac{5^2}{6^3}


And since there are three of these combinations, The answer is


3\frac{5^2}{6^3}


Fourth question:

Since the question suggests to use what we already achieved, let's do it: having at least one six is the complementary event of having no sixes at all. If an event has probability p, its complementary has probability 1-p. So, since the probability of no sixes is known, the probability of at least one six is


1 - \frac{5^3}{6^3}

4 0
3 years ago
What is x in this problem 8-(-4)^2-5=x
hichkok12 [17]

Answer:

X=-12

Step-by-step explanation:

9-16-5=X

-12=X

X=-12

6 0
2 years ago
Read 2 more answers
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