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ipn [44]
3 years ago
11

help meeeeeeee please Nо files оr Im sоrry I dоnt understand this I will mark you brainlist if you answer all of them!!!! PLEASE

HELPPPP

Mathematics
1 answer:
Yakvenalex [24]3 years ago
7 0

Lesson 4: Different equations can describe the situation because the equation doesn't have to be the same equation. you can have 21 - 11 and get 10, but have 2 + 8 and get 10.

Lesson 1: A tape diagram is used to represent a situation by having numbers on each lets say stamp you could have 20 as a product and have 4 stamps with 5 on each of them.

I don't know how to make a tape diagram on a computer.

Lesson 2; What it means that an equation is either true or false is if you get the correct answer to the equation.

Lesson 5: A fraction is made out of fractions or decimals because there is always an equal fraction. and you can represent a fraction like 10/10 as 1.00 as a decimal or 1/10 as 0.1

Lesson 3: A balance hanger will give you steps to find an unknown amount in an associated equation if the left side of the hanger has 5 squares on it and the number of 15 you would know that each square is equal to 3. and a true equation would tell you what you would add or multiply or divide or subtract.

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A random sample of n measurements was selected from a population with unknown mean μ and known standard deviation σ. Calculate a
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Answer:

The 95% confidence interval for μ for the given situation is between 87.49 and 94.51.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.025 = 0.975, so z = 1.96

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

M = 1.96\frac{20}{\sqrt{125}} = 3.51

The lower end of the interval is the sample mean subtracted by M. So it is 91 - 3.51 = 87.49

The upper end of the interval is the sample mean added to M. So it is 91 + 3.51 = 94.51

The 95% confidence interval for μ for the given situation is between 87.49 and 94.51.

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21. A linear function g(x) passes through the points (3, -1) and (-6, -4). What is the y-intercept of the function? Write the so
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