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Rudik [331]
2 years ago
12

Helo helo hell hell help

Mathematics
2 answers:
Ymorist [56]2 years ago
4 0

Answer:

C

Step-by-step explanation:

Verdich [7]2 years ago
4 0

Answer:

C

Step-by-step explanation:

Can i get brainliest plz? :) if not it's ok :)

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Please Help!<br><br> What is a cubic polynomial function in standard form with zeros –5, –1, and –5?
yan [13]
FIRST. find the factors:
X=-5 --> (X + 5) = 0
x = 1--> (X - 1) = 0
x =3 --> (x - 3) = 0
3
NEXT, multiply all the factors:
(x + 5) (x - 1) (x - 3) = 0
-> X3 + x2 - 17x +15 = 0
-> f(x) = x3 + x2 - 17x +15 or
y=x3 + x2
17x + 15
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2 years ago
Describe the order of operations you would use to
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First apply the exponent: 3 ^ 2
9
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2 years ago
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2)10.14ft
3)16ft

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3 years ago
How many people must be in the group so that the probability of any two people sharing the same birthday is ~50%?
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3 years ago
A polymer is manufactured in a batch chemical process. Viscosity measurements show that it is approximately normally distributed
PilotLPTM [1.2K]

Answer: (751.05, 766.95)

Step-by-step explanation:

We know that the confidence interval for population mean is given by :-

\overline{x}\pm z*\dfrac{\sigma}{\sqrt{n}},

where \sigma =population standard deviation.

\overline{x}= sample mean

n= sample size

z* = Two-tailed critical z-value.

Given :  \sigma= 20

n= 42

\overline{x}=759

We know that from z-table , the two-tailed critical value for 99% confidence interval : z* =2.576

Now, the 99% confidence interval around the true population mean viscosity :-

759\pm (2.5760)\dfrac{20}{\sqrt{42}}\\\\=759\pm (2.5760)(3.086067)\\\\=759\pm7.9497=(759-7.9497,\ 759+7.9497)\]\\=(751.0503,\ 766.9497)\approx(751.05,\ 766.95)

∴ A 99% confidence interval around the true population mean viscosity : (751.05, 766.95)

3 0
3 years ago
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