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JulijaS [17]
3 years ago
5

Please work it out down below.

Mathematics
1 answer:
Anna35 [415]3 years ago
5 0

Answer:

16

Step-by-step explanation:

3 |a-b| +2|b-1|

a= -2 and b=-4

3 |-2--4| +2|-4-1|

3 |-2+4| +2|-4-1|

3 |2| +2|-5|

Absolute value means takes whatever is inside and make it positive

3*2 +2*5

6 +10

16

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Find the equation of the line passing through the points (-4,-5) and (4,1)
RoseWind [281]

Answer:

Y = 3/4x - 2

Step-by-step explanation:

Slope = (1 - - 5)/(4 - - 4 =6/8 = 3/4

b = -5 - (3/4)(-4)

b = -5 + 3 = -2

y = 3/4x - 2

6 0
2 years ago
The number of undergraduates at Johns Hopkins University is approximately 2000, while the number at Ohio State University is app
Likurg_2 [28]

The remaining part of Question:

4) what can we conclude about sampling variability in the sample proportion calculated in the sample at John Hopkins as compared to that calculated in the sample at Ohio State.

5) The number of undergraduates at Johns Hopkins is approximately 2000 while the number at Ohio State is approximately 40000, suppose instead that at both schools, a simple random sample of about 3% of the undergraduates Will be taken.

Answer:

4) The sample proportion from Johns Hopkins will have about the same sampling variability as that from Ohio State

5) The sample proportion from John Hopkins will have more sampling variability than that from Ohio State

Step-by-step explanation:

Note: The sampling variability in the sample proportion decreases with increase in the sample size.

4) since the sample size at both Johns Hopkins and Ohio State is the same (i.e. n = 50), the sample variability of the sample proportion will be the same for both cases.

5) 3% of the population are selected for the observation in both cases.

At Johns Hopkins, sample size, n = 3% * 2000

n = 60

At Ohio State, sample size, n = 3% * 40000

n = 1200

Since sampling variability in the sample proportion decreases with increase in the sample size, the sampling variability in sample proportion will be higher at Johns Hopkins than at Ohio State.

5 0
3 years ago
What are the factors of x^2 + 3x -4 ?​
algol13

Answer:

1 and -4

Step-by-step explanation:

cause when you factor the equation its (x-1)(x+4)

4 0
3 years ago
Read 2 more answers
Ernesto solves the equation below by first squaring both sides of the equation. \sqrt{\dfrac{1}{2}w+8}=-2 2 1 ​ w+8 ​ =−2square
algol [13]

Answer:

<h2>w = -8</h2>

Step-by-step explanation:

Given the equation solved by Ernesto expressed as \sqrt{\dfrac{1}{2}w+8}=-2, the extraneous solution obtained by Ernesto is shown below;

\sqrt{\dfrac{1}{2}w+8}=-2\\\\square\ both \ sides \ of \ the \ equation\\(\sqrt{\dfrac{1}{2}w+8})^2=(-2)^2\\\\\dfrac{1}{2}w+8 = 4\\\\Subtract \ 8 \ from \ both \ sides\\\\\dfrac{1}{2}w+8 - 8= 4- 8\\\\\dfrac{1}{2}w= -4\\\\multiply \ both \ sides \ by \ 2\\\\\dfrac{1}{2}w*2= -4*2\\\\w = -8

Hence, the extraneous solution that Ernesto obtained is w = -8

4 0
3 years ago
Find the value of 7p – 3q when p= 8 and q = -5
EastWind [94]

Step-by-step explanation:

7p – 3q

if p= 8 and q = -5

7(8)-3(-5)

56+15

=71

5 0
2 years ago
Read 2 more answers
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