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DerKrebs [107]
3 years ago
12

Help please this is hard i'll mark you the brainlyest!

Mathematics
1 answer:
melomori [17]3 years ago
3 0

Answer:

c

Step-by-step explanation:

c, because if you're doing a percentage of kids who bring lunches you need to do every grade level and every student to get a proper percentage

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A recent survey found that 70% of all adults over 50 wear
lubasha [3.4K]

Answer:

There is an 84.97% probability that at least six wear glasses.

Step-by-step explanation:

For each adult over 50, there are only two possible outcomes. Either they wear glasses, or they do not. This means that we use the binomial probability distribution to solve this problem.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinatios of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

In this problem we have that:

n = 10, p = 0.7

What is the probability that at least six wear glasses?

P(X \geq 6) = P(X = 6) + `P(X = 7) + P(X = 8) + P(X = 9) + P(X = 10) = 0.8497

There is an 84.97% probability that at least six wear glasses.

5 0
3 years ago
Find the midpoint of AC is at -2 and C is at 3 on a number line
Bad White [126]
2c3 Because when you look at it when you look at the question if I do that and then you were at the AC is at the two and see is that the three on the number line then you would add that on and you’ll get your answer
3 0
3 years ago
Suppose a triangle has sides 3, 4, and 5. Which of the following must be true?
ladessa [460]

Answer:

a triangle as 3 sides

Step-by-step explanation:

7 0
3 years ago
23 - (2 + 4) - 15 ÷ 3
liubo4ka [24]

Answer:

12

Step-by-step explanation:

23 - (2 + 4) - 15/3

23 - (6) - 5

23 - 6 - 5

12

6 0
3 years ago
Read 2 more answers
The approximate cube of 9.8 is?​
lianna [129]

Answer:

9.8 Cubed

9.8 cubed, (9.8)3, is the number you get when multiplying 9.8 times 9.8 times 9.8.

It can also be looked at as exponentiation involving base 9.8 and exponent 3.

The term is usually pronounced 3rd power of 9.8 or 9.8 to the third power.

The cube of 9.8 is an imperfect cube because 941.192 is the product of the three equal numbers 9.8 which contain decimals.

It can be written as 9.8 × 9.8 × 9.8 or in exponential form.

Read on to learn everything about the number (9.8)³.

Number: 9.8

Number Cubed: 941.192

Step-by-step explanation:

hope this helps...

have a nice weekend...

ヽ(ヅ)ノ

4 0
3 years ago
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