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antiseptic1488 [7]
3 years ago
8

75% of 68 is what number?

Mathematics
2 answers:
scZoUnD [109]3 years ago
7 0
The answer is fifty one (51)
patriot [66]3 years ago
5 0
51. You can find this by doing a quick and simple proportion!
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Jason wants to know the percentage of M & M's that are green. He chooses a sample of 30 M & M's from a bag, and 3 of the
KATRIN_1 [288]

Answer:

The margin of error of his experiment is of 0.1074.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the z-score that has a p-value of 1 - \frac{\alpha}{2}.

The margin of error is of:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

30 M & M's from a bag, and 3 of them are green.

This means that n = 30, \pi = \frac{3}{30} = 0.1

Standard 95% confidence level

So \alpha = 0.05, z is the value of Z that has a p-value of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

Margin of error:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

M = 1.96\sqrt{\frac{0.1*0.9}{30}}

M = 0.1074

The margin of error of his experiment is of 0.1074.

5 0
3 years ago
Please answer this only for 35 points
Studentka2010 [4]

Answer:

any one need a gf??

Step-by-step explanation:  HELLO here she is waiting for u may decline but hey worth a shot.... And id.k the answer

3 0
3 years ago
Can some help with this problem
Novosadov [1.4K]

Answer:

20 degrees.

Step-by-step explanation:

The interior angles of a triangle add up to 180 degrees. One of them, bottom right, is already shown as 70 degrees. You can find the bottom left angle by subtracting 110, the supplementary angle, from 180 (the number of degrees in a straight line). The top angle, 2x, is equal to 40 degrees. (180-70-70 = 40). 40/2 = x, so x = 20 degrees.

3 0
3 years ago
[20PTS] Multiply or divide as indicated.<br> x -3 • x 7
marta [7]

Answer:

the answer would be divide, because of the negative 3 in the answer.

just remember when there is a negative in the equation it is almost always do the opposite.

have fun and be you <3

Step-by-step explanation:

3 0
3 years ago
The student population at Oak Mountain High School for a given year can be modeled by the function P(t)=550(1.12)^t , where t is
Anton [14]

Answer:

There were 550 students in the school in the year 1995

Step-by-step explanation:

In this question, given the exponential equation, we are asked to calculate the number of students in a particular year.

The exponential equation expected to be used is given as;

P(t) = 550(1.12)^t

Now we are told that t is the number of years since 1995 and we are told to calculate the number of students in that same year 1995. Thus, the value of t would be 1995-1995 = 0

We substitute this value of t into the equation;

P(0) = 550(1.12)^0

Since anything raised to the power of zero is 1, then ;

P(0) = 550 * 1 = 550

3 0
4 years ago
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