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mafiozo [28]
3 years ago
11

How do average​ speed, distance, and time all relate to each​ other?

Mathematics
1 answer:
koban [17]3 years ago
8 0
The answer is A !
I’m sorry if this is wrong :(
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A square garden is 12 m long. A hedge wall 1 meter wide surrounds
sammy [17]
I think it only surrounds 1 meter because it’s a meter long
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3 years ago
A random sample is selected from a normally distributed population. The following sample statistics are obtained: n = 20, = 30,
Flura [38]

Answer:

b) The margin of error is approximately 3.24

e) The critical value is 1.7921.

Step-by-step explanation:

<u>Step(i</u>):-

Given sample size 'n' =20

Given sample standard deviation 's' = 10

<u><em> Margin of error </em></u>

<u><em>The margin of error is determined by</em></u>

<u><em /></u>M.E = \frac{t_{\alpha } S.D }{\sqrt{n} }<u><em /></u>

<em>The level of significance ∝ =0.95</em>

<em>The degrees of freedom = n-1 = 20-1=19</em>

t₀.₉₅ = 1.729

M.E = \frac{1.729 X10 }{\sqrt{20} }

Margin of error = 3.866

Step(ii):-

<u><em> Margin of error </em></u>

<u><em>The margin of error is determined by</em></u>

<u><em /></u>M.E = \frac{t_{\alpha } S.D }{\sqrt{n} }<u><em /></u>

<u><em>Given another sample size n =30</em></u>

<em>The level of significance ∝ =0.95</em>

<em>The degrees of freedom = n-1 = 30-1=29</em>

t₀.₉₅ = 1.70

M.E = \frac{1.7021 X10 }{\sqrt{30} } =3.24

<u><em>Margin of error = 3.24</em></u>

5 0
3 years ago
Please help I’m so confused thanks ????
Elena L [17]

Answer:

They Intersect at <u>(-2,-8)</u>

Step-by-step explanation:

This is a system of equation problem that I solved with graphing, if you need me to go into detail on how I did it or If you want me show how  to solve it how the question is asking, just let me know

7 0
3 years ago
Write an expression for 8 less than 2 times a number<br>show your work ​
Andru [333]

Answer:

Step-by-step explanation:

Let's call the number x. The statement "...2 times a number" if the number is x looks like this:

2x

"8 less than" that looks like this:

... - 8

Putting the whole thing together:

2x - 8

5 0
3 years ago
A random variable X is exponentially distributed with an expected value of 68.
VLD [36.1K]
It is b because you round to the nearest 100 and I got it right on the quiz
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