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babymother [125]

2 years ago

14

y=2(x+3)^2-2 Vertex: y-intercept: x- intercept(s): Axis of symmetry: Domain: Range: -- Please explain your work! and if you can,

add a graph, but if not I understand! Thank you!

1 answer:

Lina20 [59]2 years ago

5 0

Answer:

54

Step-by-step explanation:

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Plz help me!!! I need this answered correctly and with explanation!!! <br> Solve z/−8 ≥ −0.25

Svetlanka [38]

Answer:

z≤2

Step-by-step explanation:

Step 1: Simplify both sides of the inequality.

−1/8z≥−0.25

Step 2: Multiply both sides by 8/(-1).

(8/−1)*(−18z)≥(8−1)*(−0.25)

z≤2

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3 years ago

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goblinko [34]

The correct answer is, obviously, 34/7.

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Two trains are traveling at a constant seed on different tracks Which train is traveling faster

EleoNora [17]

Answer:

Whichever train has the greatest numbers

Step-by-step explanation:

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3 years ago

A=160, b=110, C=54. What is the distance between AB?

Schach [20]

Answer:

50

Step-by-step explanation:

answer is 50

3 0

2 years ago

Calculating the degrees of freedom, the sample variance, and the estimated standard error for evaluations using the t statistic

Yuliya22 [10]

Answer:

a) For the first part we have a sample of n =10 and we want to find the degrees of freedom, and we can use the following formula:

$df = n-1= 10-1=9$

d.9

b) $s^2 = \frac{SS}{n-1}= \frac{600}{41-1}= 15$

a.15

c) For this case we have the sample size n = 25 and the sample variance is $s^2 =400$ , the standard error can founded with this formula:

$SE = \frac{s^2}{\sqrt{n}}= \frac{400}{\sqrt{25}}= 80$

Step-by-step explanation:

Part a

For the first part we have a sample of n =10 and we want to find the degrees of freedom, and we can use the following formula:

$df = n-1= 10-1=9$

d.9

Part b

From a sample we know that n=41 and SS= 600, where SS represent the sum of quares given by:

$SS = \sum_{i=1}^n (X_i -\bar X)^2$

And the sample variance for this case can be calculated from this formula:

$s^2 = \frac{SS}{n-1}= \frac{600}{41-1}= 15$

a.15

Part c

For this case we have the sample size n = 25 and the sample variance is $s^2 =400$ , the standard error can founded with this formula:

$SE = \frac{s^2}{\sqrt{n}}= \frac{400}{\sqrt{25}}= 80$

8 0

2 years ago