4 years ago

Can someone help me with my home work plz

Mathematics

1 answer:

Marizza181 [45]4 years ago

6 0

Yes, you must first link the problem with your question

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Cameron has 4 clown fish in his fish tank. One third of the fish in the tank are clown fish. How many fish does Cameron have in

forsale [732]

Cameron has 12 fish.
The denominator in 1/3 tells you that there are THREE equal parts in the whole group. Draw 3 circles to show THREE equal parts.
Since 4 fish are 1/3 of the whole group, draw FOUR counters in the first circle.
Since there are FOUR counters in the first circle, draw FOUR counters in each of the remaining circles. Then find the total number of counters.
So Cameron has TWELVE fish in his tank

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3 years ago

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What is the equation in point slope form of the line that goes through the points (-4,-2) and(-6,16)

Stels [109]

Answer:

16-(-2)/ -6-(-4)= 18/-2= -9

Step-by-step explanation:

y2-y1/ x2-x1

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3 years ago

Kiaraly answered 27 out of 30 questions correctly on her math test. Later she answered 22 of 25 questions correctly on her scien

STatiana [176]

It’s same because 30-27=3
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4 years ago

A clinical trial was conducted to test the effectiveness of the drug zopiclone for treating insomnia in older subjects. Before t

aleksklad [387]

Answer:

We cannot say that the mean wake time are different before and after the treatment, with 98% certainty. So the zopiclone doesn't appear to be effective.

Step-by-step explanation:

The goal of this analysis is to determine if the mean wake time before the treatment is statistically significant. The question informed us the mean wake time before and after the treatment, the number of subjects and the standard deviation of the sample after treatment. So using the formula, we can calculate the confidence interval as following:

$IC[\mu ; 98\%] = \overline{y} \pm t_{0.99,n-1}\sqrt{\frac{Var(y)}{n}}$

Knowing that $t_{0.99,15} = 2.602$ :

$IC[\mu ; 98\%] = 98.9 \pm 2.602\frac{42.3}{4} \Rightarrow 98.9 \pm 27.516$

$IC[\mu ; 98\%] = [71.387 ; 126,416]$

Note that $102.8 \in [71.384 ; 126.416]$ so we cannot say, with 98% confidence, that the mean wake time before treatment is different than the mean wake time after treatment. So the zopiclone doesn't appear to be effective.

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3 years ago

Tasty Bakery sells three kinds of muffins chocolate chip muffins at 15 cents each, oatmeal muffins at 20 cents each, and cranber

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he brought 5 cranberry muffins.

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3 years ago

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