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irga5000 [103]
2 years ago
13

Rewrite 18/14 in simplest form

Mathematics
2 answers:
maks197457 [2]2 years ago
6 0
You would divide them both my two to get 9/7
Ivenika [448]2 years ago
5 0
18/14 is 1.28 there is no way to simplify this. are there answer choices?
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Polymer composite materials have gained popularity because they have high strength to weight ratios and are relatively easy and
Brums [2.3K]

Answer:

t=\frac{51.6-48}{\frac{1.1}{\sqrt{10}}}=10.349      

p_v =P(t_9>10.349)=1.34x10^{-6}  

If we compare the p value and the significance level given for example \alpha=0.05 we see that p_v so we can conclude that we reject the null hypothesis, and the the actual mean is significantly higher than 48 MPa at 5% of significance.

Step-by-step explanation:

1) Data given and notation      

\bar X=51.6 represent the sample mean

s=1.1 represent the standard deviation for the sample      

n=10 sample size      

\mu_o =48 represent the value that we want to test    

\alpha=0.05 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)  

State the null and alternative hypotheses.      

We need to conduct a hypothesis in order to determine if the mean score is higher than 48, the system of hypothesis would be:      

Null hypothesis:\mu \geq 48      

Alternative hypothesis:\mu > 48      

We don't know the population deviation, so for this case 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{\sigma}{\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{51.6-48}{\frac{1.1}{\sqrt{10}}}=10.349      

Calculate the P-value      

First we find the degrees of freedom:

df=n-1=10-1=9

Since is a one-side upper test the p value would be:      

p_v =P(t_9>10.349)=1.34x10^{-6}  

Conclusion      

If we compare the p value and the significance level given for example \alpha=0.05 we see that p_v so we can conclude that we reject the null hypothesis, and the the actual mean is significantly higher than 48 MPa at 5% of significance.        

5 0
3 years ago
Estimate. Round to the greatest place value. Circle whether the estimate is greater then or less then the actual product.
nataly862011 [7]

Answer:

The estimate is greater then.

Step-by-step explanation:

143*2=286

286*2=572 not 6,517

4 0
2 years ago
The number math problems Michel can solve varies directly with the amount of time he spends solving math problems. Michel can so
Mama L [17]

Answer:

40 problems      

Step-by-step explanation:

8 problems : 5 mins

      ?            : 25 mins

8 x 5 = 40

40 problems      

hope this helps

braonliest plz?

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5 0
3 years ago
Read 2 more answers
What is the value of y?<br> Help I will mark brainliest
Alisiya [41]

Answer:

y = 9

Step-by-step explanation:

The triangle is a 45-45-90 triangle.  The legs are congruent, therefore y = 9

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2 years ago
PLZ PLZ HALP
Kipish [7]
A) 3.
B) 1.
C) 6.
D) 2.
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3 years ago
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