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s344n2d4d5 [400]
3 years ago
6

Find the area of this shape ​

Mathematics
2 answers:
AVprozaik [17]3 years ago
7 0

Answer:

40 ft squared

Step-by-step explanation:

On the top right corner cut the shape and you will have a length of 4 ft and width of 2 ft. 4ft x 2ft = 8ft squared. Now your other shape at the bottom which would be a  big rectangle has a width of 8ft and a length of 4ft. 8ft x 4ft = 32 ft squared. Now 8ft squared + 32 ft squared = 40 ft squared that would be its area.

allsm [11]3 years ago
7 0

Answer:

36 ft²

Step-by-step explanation:

Area = 4 × 4 + 6 × 4

Area = 16 + 20

Area = 36 ft²

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A new centrifugal pump is being considered for an application involving the pumping of ammonia. The specification is that the fl
cricket20 [7]

Answer:

1) We need to conduct a hypothesis in order to check if the true mean is higher than 5 gpm, the system of hypothesis would be:  

Null hypothesis:\mu \leq 5  

Alternative hypothesis:\mu > 5  

2) df=n-1=8-1=7  

Since is a one sided test the p value would be:  

p_v =P(t_{(7)}>2.233)=0.0304  

3) For this case is we use a significance level of 1% or 99% of confidencewe see that p_v >\alpha and we don't have enough evidence to conclude that the specification is satified. But if we use a value of significance \alpha=0.05 or 95% of confidence we see that p_v and we have enough evidence to conclude that the specification is satisfied.

Step-by-step explanation:

Data given and notation  

\bar X=6.5 represent the sample mean

s=1.9 represent the sample standard deviation

n=8 sample size  

\mu_o =5 represent the value that we want to test

\alpha 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)  

Part 1: State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the true mean is higher than 5 gpm, the system of hypothesis would be:  

Null hypothesis:\mu \leq 5  

Alternative hypothesis:\mu > 5  

If we analyze the size for the sample is <30 and we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:  

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

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

Calculate the statistic

We can replace in formula (1) the info given like this:  

t=\frac{6.5-5}{\frac{1.9}{\sqrt{8}}}=2.233    

Part 2: P-value

The first step is calculate the degrees of freedom, on this case:  

df=n-1=8-1=7  

Since is a one sided test the p value would be:  

p_v =P(t_{(7)}>2.233)=0.0304  

Part d: Conclusion  

If we compare the p value and the significance level given \alpha=0.01 we see that p_v>\alpha so we can conclude that we have enough evidence to fail reject the null hypothesis, so we can't conclude that the height of men actually its significant higher compared to the height of men in 1960 at 1% of signficance.  

Part 3

For this case is we use a significance level of 1% or 99% of confidencewe see that p_v >\alpha and we don't have enough evidence to conclude that the specification is satified. But if we use a value of significance \alpha=0.05 or 95% of confidence we see that p_v and we have enough evidence to conclude that the specification is satisfied.

4 0
3 years ago
How do I solve this?
diamong [38]

\bf 8m + 95 < -87m+5\implies 95m+95

3 0
3 years ago
5th grade math. correct answer will be marked brainliest
postnew [5]

The answer is b          

saddsadsadas

8 0
3 years ago
Read 2 more answers
Can someone please help the question is ; find 75% of 192
natima [27]

Answer:

75% of 192 is 144

Step-by-step explanation:

The answer is 144 because 192 multiplied by 75% is 144.

P.S Can I have brainliest?

5 0
3 years ago
Can you solve this ? Thanks
andreyandreev [35.5K]
For #1
you would do 
8 + 8 + 5 + 5 = 26
so they use 26 inches of ribbon

for #2 
since there is 8 sides and each side is 3 feet we multiply 
8 x 3 = 24 
so the perimeter of her collage room is 24 feet

for #3
its cut off...
5 0
3 years ago
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