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kenny6666 [7]
3 years ago
10

(PLEASE ANSWER + BRAINLIEST!!)

Mathematics
1 answer:
Licemer1 [7]3 years ago
8 0
The answer is x=20.  Hope this helps.
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Are two equilateral triangles always similar
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Yes because all equilateral triangles have equal angles and side lengths so they are all similar. hope i helped -J

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Simplify the expression. (3x2 – 4x + 1) + (-x2 + x – 9)
LuckyWell [14K]

(3x^2 - 4x + 1) + (-x^2 + x - 9)=\\3x^2-4x+1-x^2+x-9=\\2x^2-3x-8

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Write this in words- 2.0120
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Two point zero one hundred twenty
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Suppose the heights of women at a college are approximately Normally distributed with a mean of 65 inches and a population stand
Zigmanuir [339]

Answer:

Step-by-step explanation:

Hello!

The variable of interest, X: height of women at a college, has an approximately normal distribution with mean μ= 65 inches and standard deviation σ= 1.5 inches.

You need to look for the value of height that marks the bottom 20% of the distribution, i.e. the height at the 20th percentile of the normal curve, symbolically:

P(X≤x₀)= 0.20

To know what value of height belongs to the 20% of the distribution, you have to work using the standard normal distribution and then reverse the standardization with the population mean and standard deviation to reach the value of X. So the first step is to look for the Z-value that accumulates 20% of the distribution:

P(Z≤z₀)=0.20

z₀= -0.842

z₀= (x₀-μ)/σ

z₀*σ= (x₀-μ)

x₀= (z₀*σ)+μ

x₀= (-0.842*1.5)+65

x₀= 63.737 inches

I hope it helps!

6 0
3 years ago
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harina [27]
The range is the Y value and the Domain is the X value.
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