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san4es73 [151]
3 years ago
13

Simplify the algebraic fractions

Mathematics
1 answer:
GalinKa [24]3 years ago
5 0

Step-by-step explanation:

x²-9/x²-3x

x²-9 simplifies to (x+3)(x-3)

x²-3x simplifies to x(x-3)

cancel out the common term of (x-3) from the numerator and denominator to obtain

x+3/x

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Construct the 95% confidence interval for the population mean using the appropriate distributions. a. A random sample of 50 peop
SSSSS [86.1K]

Answer: 95% confidence interval would be (26.01,29.39).

Step-by-step explanation:

Since we have given that

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\bar{x}\pm z\times \dfrac{\sigma}{\sqrt{n}}\\\\=27.7\pm 1.96\times \dfrac{6.12}{\sqrt{50}}\\\\=27.7 \pm 1.69\\\\=(27.7-1.69,27.7+1.69)\\\\=(26.01,29.39)

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4 0
4 years ago
A quality control inspector tested 235 CDs and found 8 defective
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Answer:

235 C D s =

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7 0
3 years ago
The area of a triangle whose height is 1 more than 6 times it’s base is 13 square feet. If the base of the triangle is x feet wh
fredd [130]
Area of a triangle: A= 1/2(base)(hieght)

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Are either of those the answers? If not, list the options and I will be able to tell you which one is correct. Hope this helped!

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3 years ago
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