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Bond [772]
3 years ago
9

Tell whether this equation has no solution, one solution, or infinitely

Mathematics
2 answers:
natali 33 [55]3 years ago
8 0

Answer:

infinitely many solutions

Step-by-step explanation:

Debora [2.8K]3 years ago
5 0
Infinity many solutions
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The average heights of a random sample of 400 people from a city is 1.75 m. It is known that the heights of the population are r
Dimas [21]

Answer:

The 95% confidence interval for the average heights of the population is between 1.7108m and 1.7892m.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.025 = 0.975, so z = 1.96

Now, find M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

The standard deviation is the square root of the variance. So

\sigma = \sqrt{0.16} = 0.4

Then

M = 1.96*\frac{0.4}{\sqrt{400}} = 0.0392

The lower end of the interval is the mean subtracted by M. So it is 1.75 - 0.0392 = 1.7108m

The upper end of the interval is the mean added to M. So it is 1.75 + 0.0392 = 1.7892m

The 95% confidence interval for the average heights of the population is between 1.7108m and 1.7892m.

4 0
4 years ago
Which is one way to check 102 ÷ 6 = 17
Bad White [126]
Hey, Imherkk!
You can check by using a calculator.
Another way is doing 17*6.
If you get 102(you do) then you're answer is right.
I hope this helps;)
8 0
3 years ago
Read 2 more answers
Round 325.49 to the nearest tens place
VLD [36.1K]
If you meant tens place it's 330 if you meant tenths place it's 325.5
6 0
3 years ago
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20POINTS<br> x-4y=1 and 2 x-8y=2
Rom4ik [11]
First you would take one and move it over to the left side and never leave for why and then you divide by one which would leave for why and it would also have X equals 4Y and then you divide ask my Y and I will just leave you which is XY equals four
4 0
3 years ago
WILL GIVE BRAINLIEST find the minimum value of the parabola y=x^2+42/5
Masja [62]

Answer:

Minimum value = (0, \frac{42}{5} )

  1. Set up the function in general form
  2. Determine the direction of the graph
  3. Calculate -b/2a
  4. Find the corresponding f(x) value
  5. Write your quadratic function in standard or vertex form

Please Mark Brainliest If This Helped!

5 0
2 years ago
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