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nordsb [41]
2 years ago
12

The system of a linear equation y=2x-1 and y=-4x-1 is graphed below.pls help.​

Mathematics
2 answers:
kotykmax [81]2 years ago
5 0

Answer:A

(0,-1)

Step-by-step explanation:

Hope this helps!

Scrat [10]2 years ago
3 0

Answer:

A

Step-by-step explanation:

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A small lawnmower company produced 1,500 lawnmowers in 2008. In an effort to determine how maintenance-free these units were, th
ikadub [295]

Answer:

The 95% confidence interval for the average number of years until the first major repair is (3.1, 3.5).

Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for the average using the finite correction factor is:

CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}\cdot\sqrt{\frac{N-n}{N-1}}

The information provided is:

N=1500\\n=183\\\sigma=1.47\\\bar x=3.3

The critical value of <em>z</em> for 95% confidence level is,

<em>z</em> = 1.96

Compute the 95% confidence interval for the average number of years until the first major repair as follows:

CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}\cdot\sqrt{\frac{N-n}{N-1}}

     =3.3\pm 1.96\times\frac{1.47}{\sqrt{183}}\times\sqrt{\frac{1500-183}{1500-1}}\\\\=3.3\pm 0.19964\\\\=(3.10036, 3.49964)\\\\\approx (3.1, 3.5)

Thus, the 95% confidence interval for the average number of years until the first major repair is (3.1, 3.5).

7 0
3 years ago
A public interest group hires students to solicit donations by telephone. After a brief training period students make calls to p
IceJOKER [234]
I need help with the answer?
8 0
3 years ago
Solve linear equations -4(b+3)-12=2b-16+5b
daser333 [38]

Answer:

Exact form:b=-\frac{8}{11}\\Decimal form: b=-0.72727272727272727272

Step-by-step explanation:

-4(b+3)-12=2b-16+5b

-4b-12-12=2b+5b

-4b-24=7b-16

-4b=7b+8

3 0
3 years ago
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-28-6b=8 I can’t get the answer I need help.
SVETLANKA909090 [29]

Answer:

6

Step-by-step explanation:

-28-6b=8

-6b=36

b=6

5 0
2 years ago
What is £41 deacreased by 90%?
DaniilM [7]
90% of <span>£41 = 90/100 × 41 = </span><span>£36.9

</span>£41 decreased by 90% = 41 - 36.9 = <span>£4.1</span>
7 0
3 years ago
Read 2 more answers
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