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faust18 [17]
2 years ago
10

PLEASE HELP!!

Mathematics
1 answer:
baherus [9]2 years ago
4 0

Answer:

How tall is he semicirlce?

Step-by-step explanation:

Then I can solve

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lisov135 [29]
There are 23 nickles in her purse
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3 years ago
An investigator wants to estimate caffeine consumption in high school students. how many students would be required to estimate
astraxan [27]

We can solve this problem by referring to the standard probability distribution tables for z.

We are required to find for the number of samples given the proportion (P = 5% = 0.05) and confidence level of 95%. This would give a value of z equivalent to:

z = 1.96

Since the problem states that it should be within the true proportion then p = 0.5

Now we can find for the sample size using the formula:

n = (z^2) p q /E^2

where,

<span> p = 0.5</span>

q = 1 – p = 0.5

E = estimate of 5% = 0.05

Substituting:

n = (1.96^2) 0.5 * 0.5 / 0.05^2

n = 384.16

<span>Around 385students are required.</span>

6 0
3 years ago
4. Suppose Tyler sprayed around the house for ants. Which formula would be used to find the number of ants still alive after a c
babunello [35]

Answer:

I think that the answer is A.

Step-by-step explanation:

6 0
3 years ago
PLEASE HELP! ILL GIVE BRAINIEST!!!
jasenka [17]
The answer would be

Fraction 3/10
Percent 30%
Decimal 0.3

There is 10 parts and it ask for probability of 3 numbers which would be 3/10
8 0
2 years ago
A dance school has 63 ballet dancers. If 42% of the total number of dancers in the school are ballet dancers, what is the total
maria [59]
The total number of dancers in the school is 150.
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3 years ago
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