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NISA [10]
3 years ago
13

Some viruses are more contagious than others. Instead of passing the virus to one new person, imagine each

Mathematics
1 answer:
Alex_Xolod [135]3 years ago
6 0

Answer:

i would say witihin months it would be world wide

Step-by-step explanation:

example corona, corona went from something knows abou to world wide in just a couple months please give brainlest

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Write the fractional equivalent (in reduced form) to each number 30 points
tankabanditka [31]
Correct answers are:

1)    1/3 (NOT 3/10).  .3 repeating is not 3/10, 3/10 is .3.
2)    1/8.  To solve, .125 has three places, so use 1000.  1000/125 is 8, that is your denominator.  125/125 is 1 is your numerator.
3)    1/6 (divide 100/16, which is 6 ¼ - round to 6.  If you carry this out to 1,000,000/166,667, it is very close to 6.
4)    1/10
5)    2/3 (NOT 3/5)
6)    1/5 (2/10 reduced to 1/5)
7)    3/4 (75/100 reduced)


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7 0
3 years ago
I need help on B and C. Not sure how I can solve those. Can someone please help me out here? Thank you for your help!
Valentin [98]

Nice job with part A on getting those correct answers.

====================================================

Part B

  • mu = mean = 43
  • sigma = standard deviation = 3

Let's calculate the z score for the raw score x = 37

z = (x - mu)/sigma

z = (37 - 43)/3

z = -6/3

z = -2

A negative z score tells us we're below the mean. Specifically, we are exactly 2 standard deviations under the mean.

If you repeat those steps for x = 46 (not changing mu or sigma), then you should get z = 1. So we're now 1 standard deviation above the mean.

Ultimately, we want to know the area under the standard normal curve (aka z curve) from z = -2 to z = 1.

Refer to the chart below which is a breakdown of the Empirical Rule. The pink areas are within 1 standard deviation of the mean. We have two regions taking up roughly 34% of the full area under the curve, so they combine to 34+34 = 68%

Then we add on another 13.5% which is the blue area on the left (between z = -2 and z = -1)

So 13.5+68 = 81.5% of the area under the curve is between z = -2 and z = 1.

<h3>Answer: 81.5</h3>

Note: the percent sign is already taken care of for us, so there's no need to type it in. But the answer above of course means 81.5% and that answer is approximate.

====================================================

Part C

Let's find the z score for x = 34. The values of mu and sigma are the same as before.

z = (x - mu)/sigma

z = (34-43)/3

z = -9/3

z = -3

So computing P(X > 34) is the same as P(Z > -3)

Notice how adding up all of the values in the chart mentioned gets us:

2.35+13.5+34+34+13.5+2.35 = 99.7

which means 99.7% of the distribution is within 3 standard deviations of the mean. The remaining 100% - 99.7% = 0.3% is the combined area of both tails. So each tail is (0.3%)/2 = 0.15%

In short, 0.15% of the area under the curve is to the left of z = -3

Therefore, 100% - 0.15% = 99.85% of the widgets are going to have z values larger than -3, which in turn means they have values larger than 34.

<h3>Answer: 99.85</h3>

Again you don't have to worry about the percent sign. Like before, the answer is approximate.

5 0
3 years ago
Whoever gets this right gets brainlyess answer and it's worth 10 points :)
Artist 52 [7]
Area of ∆=1/2bh
80yd^2=1/2(b)(10yd)
80yd^2=5yd(b)
80yd^2÷5yd=b
16yd=b
8 0
2 years ago
Find an equation of the line that satisfies the given conditions. through (9, 7); perpendicular to the line y = 5
cluponka [151]
The answer would defintley be 69 if you want the right answer.
5 0
3 years ago
If <br> DF<br> and <br> GI<br> are parallel lines and mIHE = 65°, what is mDEH?
12345 [234]

Answer:

literally i have no clue sorry

Step-by-step explanation:

3 0
3 years ago
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