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stepladder [879]
3 years ago
8

Free points to y'all. 1+1+1*0​

Mathematics
2 answers:
OLEGan [10]3 years ago
8 0

Answer:

2

Step-by-step explanation:

DiKsa [7]3 years ago
7 0
I think it’s probably 12
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Scores from an exam are normally distributed with a mean of 85 and a standard deviation of 5. Suppose 188 students take the exam
charle [14.2K]

The mean is \mu=85 and standard deviation is \sigma=5. Then the variable X\sim N(85,5).

Use substitution Z=\dfrac{X-\mu}{\sigma}=\dfrac{X-85}{5}, then the variable Z\sim N(0,1).

The probability Pr(X>80) can be calculated in the following way:

for X=80, Z=\dfrac{80-85}{5} =-1 and Pr(X>80)=Pr(Z>-1). From the diagram Pr(Z>-1)=0.34+0.34+0.135+0.025=0.84.

Conclusion: if 188 students take the exam, then 188·0.84=157.92 (157) would receive a score above 80

4 0
3 years ago
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Choose the correct symbol from the drop-down list to compare the rational number
Kay [80]

Answer:

>

Step-by-step explanation:

If we plot -1.5 and -1.76, we would see thant -1.5 is to the right of -1.76

Right means larger here, so -1.5 is larger

3 0
2 years ago
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<img src="https://tex.z-dn.net/?f=pi%20value%20%20" id="TexFormula1" title="pi value " alt="pi value " align="absmiddle" class
Monica [59]

Answer:

≈ 3.14

Step-by-step explanation:

π, or pi, is an irrational number. We mathmaticians round it to 3.14.

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2 years ago
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Brad wants to buy flowers for
Elis [28]
He wants to buy flowers for me lol
3 0
3 years ago
WILL MARK BRAINLIEST An architect is drafting a scale drawing of a house for an upcoming project. The customer wants the front o
kobusy [5.1K]

Answer:

60 ft  is 720 in. I did 720/15...that equals 48. At this point i think each in in the drawing is a foot, so every one in is 48 ft.

(x+48)

there is no y because they only give information about one side. hope this helps. :)

Step-by-step explanation:

4 0
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