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kotegsom [21]
3 years ago
14

Please help me!!! 2 1/7:(1.5a)=5/14:0.8

Mathematics
1 answer:
ololo11 [35]3 years ago
7 0

56 1/2 because i did the math

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- 7 and 8<br> What’s the answer
kvv77 [185]

Answer:

1

Step-by-step explanation:

8-7= 1

Hope this helps!

3 0
3 years ago
A research engineer for a tire manufacturer is investigating tire life for a new rubber compound and has built 16 tires and test
frutty [35]

Answer:

The 95% confidence interval for mean tire life is between 52,368.4 kilometers and 67,911 kilometers.

Step-by-step explanation:

We are in posession of the sample's standard deviation, so we use the students t-distribution to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 16 - 1 = 15

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 15 degrees of freedom(y-axis) and a confidence level of [tex]1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2.68

The margin of error is:

M = T*s = 2.1315*3645.94 = 7771.3

In which s is the standard deviation of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 60139.7 - 7771.3 = 52,368.4.

The upper end of the interval is the sample mean added to M. So it is 60139.7 + 7771.3 = 67,911.

The 95% confidence interval for mean tire life is between 52,368.4 kilometers and 67,911 kilometers.

3 0
3 years ago
Read 2 more answers
A package of ground beef costs $6.98 . The price per pound is $3.86.How many pounds of ground beef are in the package? Round to
ad-work [718]
Well it seems if you round  you would get 1.81 try it
7 0
3 years ago
A student is finding the measures of the angles in a triangle that have the ratio 4:4:7. Find the mistake and correct it.
7nadin3 [17]

suppose 4:4:7 be 4x, 4x, 7x

or, 15x = 180°

or, X = 180/15

or, X = 12

therefore,

4x = 4x12= 48

4x= 4x12= 48

7x= 7x12= 84

so if you plus all of them you get 180

8 0
2 years ago
I need help really fast
topjm [15]
The Answer is letter a
8 0
3 years ago
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