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3 years ago

-3(x – 8) + 0.5x

Mathematics

2 answers:

svlad2 [7]3 years ago

6 0

The answer for this question is -2.5x-24

densk [106]3 years ago

4 0

Answer: ( c ).........................

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Which one of the following is equivalent to 41/2 = 2?

BARSIC [14]

Answer:

20 $\frac{1}{2}$

Step-by-step explanation:

7 0

3 years ago

Assume we need to estimate the mean of a normally-distributed population with great accuracy. Specifically, for significance lev

bulgar [2K]

Answer:

$n = 2662.56\sigma^2$

Step-by-step explanation:

We are given the following in the question:

Significance level = 0.01

Width of interval = 0.1

Population variance = $\sigma^2$

We have to find the sample size so that the width of the confidence interval is no larger than 0.1

$z_{critical}\text{ at}~\alpha_{0.01} = \pm 2.58$

Formula for sample size:

$n = \displaystyle\frac{z^2\sigma^2}{E^2}$

where E is the margin of error. Since the confidence interval width is 0.1,

$E = 0.05$

Putting these values in the equation:

$n = \displaystyle\frac{(2.58)^2\sigma^2}{(0.05)^2} = 2662.56\sigma^2$

So, the above expression helps us to calculate the sample size so that the width of the confidence interval is no larger than 0.1 for different sample variances.

4 0

3 years ago

How to do this???????

Anton [14]

Answer:

x=14

Step-by-step explanation:

Form an equation; since the two sides are the same length set them equal to each other. 2x-9=x+5 the solve

2x=x+14

x=14

then you can plug it back in to check if you want

2(14)-9 = 19

14+5 = 19

4 0

3 years ago

Read 2 more answers

-2x + 4 = 3<br>how would you solve this problem?

ikadub [295]

-2x+4=3
move the 4

-2x+4=3
-4 -4

-2x=-1
then you would move the -2 by using division

-2x=-1
__ __
-2 -2

x=0.5

4 0

3 years ago

Identify the relationship between the angles. *

vagabundo [1.1K]

<h2>Hey there! </h2>

<h2>Answer:</h2>

<h3>C. Alternate Interior </h3>

<h2>Explanation:</h2>

<h3>Alternate Angles:</h3>

Alternate interior angles are the angles formed when a transversal intersects two coplanar lines. They lie on the inner side of the parallel lines but on the opposite sides of the transversal.

8 0

3 years ago