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nikklg [1K]
2 years ago
11

Find the surface area of the

Mathematics
1 answer:
Brums [2.3K]2 years ago
6 0

Answer:

169 sq cm

Step-by-step explanation:

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Solve the inequality below.<br><br> f2−9&gt;−5
Salsk061 [2.6K]

Answer:

f>2  or f<-2

Step-by-step explanation:

f^2−9>−5

Add 9 to each side

f^2−9+9>−5+9

f^2 >4

Take the square root of each side, remembering to flip the sign of  the inequality for the negative

f>2  or f<-2

5 0
3 years ago
Read 2 more answers
The product of three integers is -3. Determine all of the possible values for the three factors
ryzh [129]
-3, 1, and 1 maybe? That's my guess.
8 0
3 years ago
Zappos is an online retailer based in Nevada and employs 1,300 employees. One of their competitors, Amazon, would like to test t
Amanda [17]

Answer:

t=\frac{33.9-36}{\frac{4.1}{\sqrt{22}}}=-2.402    

df = n-1= 22-1=21

t_{\alpha/2}= -2.08

Since the calculated values is lower than the critical value we have enough evidence to reject the null hypothesis at the significance level of 2.5% and we can say that the true mean is lower than 36 years old

Step-by-step explanation:

Data given

\bar X=33.9 represent the sample mean

s=4.1 represent the sample standard deviation

n=22 sample size  

\mu_o =26 represent the value that we want to test

\alpha=0.025 represent the significance level for the hypothesis test.  

t would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

System of hypothesis

We need to conduct a hypothesis in order to check if the true mean is less than 36 years old, the system of hypothesis would be:  

Null hypothesis:\mu \geq 36  

Alternative hypothesis:\mu < 36  

The statistic is given by:

t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}  (1)  

And replacing we got:

t=\frac{33.9-36}{\frac{4.1}{\sqrt{22}}}=-2.402    

Now we can calculate the critical value but first we need to find the degreed of freedom:

df = n-1= 22-1=21

So we need to find a critical value in the t distribution with df =21 who accumulates 0.025 of the area in the left and we got:

t_{\alpha/2}= -2.08

Since the calculated values is lower than the critical value we have enough evidence to reject the null hypothesis at the significance level of 2.5% and we can say that the true mean is lower than 36 years old

3 0
3 years ago
What is 3÷4? Draw a diagram that explains how you know.
Yanka [14]

Answer:

3 divided by 4 is 0.75

Step-by-step explanation:

4 0
3 years ago
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Choose the unit that measures distance
Anna11 [10]

Answer:

Feet

Step-by-step explanation:

8 0
2 years ago
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