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Zina [86]
3 years ago
5

How do I write as a fraction a number between 2 and 3?

Mathematics
1 answer:
Ipatiy [6.2K]3 years ago
6 0

Answer:9/12

Step-by-step explanation:You can find a number between two numbers by adding them and then dividing by 2 (finding the average of the two numbers). 17/12 divided by 2 is 17/24, which is between 2/3 and 3/4. Best way to answer this is to get both fractions to have a common denominator. 2/3 = 8/12, and 3/4 = 9/12

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Which algebraic expression has a term with a coefficient of 3? A -5y-7 B 3y+1 c 3(y-6) D-2y+5+3
kiruha [24]

B. 3y+1

Hope this helps! :)

7 0
3 years ago
A manager records the repair cost for 4 randomly selected stereos. A sample mean of $82.64 and standard deviation of $14.32 are
zysi [14]

Answer:

CI = (70.861 , 94.418)

Step-by-step explanation:

In order to determine the 90% confidence interval you use the following formula (for a population approximately normal):

CI=(\overline{x}-Z_{\alpha/2}\frac{\sigma}{\sqrt{n}},\overline{x}+Z_{\alpha/2}\frac{\sigma}{\sqrt{n}})    (1)

\overline{x}: mean = 82.64

σ: standard deviation = 14.32

n: sample = 4

α: tail area = 1 - 0.9 = 0.1

Z_α/2 = Z_0.05: Z factor =  1.645

You replace these values and you obtain:

Z_{0.05}(\frac{14.32}{\sqrt{4}})=(1.645)(\frac{14.32}{\sqrt{4}})=11.778

The confidence interval will be:

CI=(82.64-11.778,82.64+11.778)=(70.861,94.418)

The 90% confidence interval is (70.861 , 94.418)

6 0
3 years ago
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yawa3891 [41]

Answer:

It 13

Step-by-step explanation:

3 0
2 years ago
Let x represent the number of television show episodes that are taped in a season. Enter an expression for the number of episode
Vinil7 [7]

Answer:

x=8 ???

Step-by-step explanation:

??? not 100% sure but im pretty sure ;w;

8 0
2 years ago
Read 2 more answers
Is the function even or odd?
sweet [91]

Answer:

f(\theta)=\cos(\theta) is an even function.

Step-by-step explanation:

Recall when it means when a function is even or odd. An even function has the following property:

f(-x)=f(x)

And an odd function has the following property:

f(-x)=-f(x)

So, let's test some values for cos(x).

Let's use π/3:

f(\pi/3)=\cos(\pi/3)

From the unit circle, was can see that this is 1/2 (refer to the x-coordinate).

Now, let's find -π/3. This is the same as 5π/3. Thus:

f(-\pi/3)=\cos(-\pi/3)

And again from the unit circle, we can see that this is 1/2.

Therefore, despite the negative, the function outputs the same value.

Cosine is an even function.

Notes:

Cosine is an even function and sine is an odd function. It's helpful to remember these as they can help you solve some trig problems!

6 0
3 years ago
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