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seraphim [82]
3 years ago
13

On the number line below, the letters a and b are the same distance from 0. What is a + b?

Mathematics
1 answer:
jolli1 [7]3 years ago
5 0

Answer:

The answer here would be 0.

Step-by-step explanation:

If a and b are both equal distances from 0, then adding the together would equal 0. Since a is the inverse of b,  using any number and its inverse will show you why the answer is 0. For example, if b is 9 then a would be -9. Adding these together equals 0.

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Many people who bought Z-Game gaming systems over the holidays have complained that the systems they purchased were defective. I
Bas_tet [7]

Answer:

The upper limit for the 95% confidence interval for the population proportion of defective gaming systems is 0.022

Step-by-step explanation:

Upper Limit for 95% Confidence Interval can be calculated using p+ME where

  • p is the sample proportion of defective gaming systems (\frac{18}{1200} = 0.015)
  • ME is the margin of error from the mean

and margin of error (ME) around the mean can be found using the formula

ME=\frac{z*\sqrt{p*(1-p)}}{\sqrt{N} } where

  • z is the statistic of 95% confidence level (1.96)
  • p is the sample proportion (\frac{18}{1200}=0.015
  • N is the sample size (1200)

Using the numbers we get:

ME=\frac{1.96*\sqrt{0.015*0.985}}{\sqrt{1200} } ≈ 0.007

Then upper limit for the population proportion is 0.015+0.007 =0.022

4 0
4 years ago
Which of the following expressions represents "5 less than 3 times the number m"?
ki77a [65]

Which of the following expressions represents "5 less than 3 times the number m"?

3 m-5

5 m-3

<u>5-3 m</u><u> </u><u>✓</u><u>✓</u><u>✓</u>

3-5 m

<h2>Answer:</h2>

Option 3. <u>5 - 3m</u>

5 0
3 years ago
Read 2 more answers
The difference of two polynomials must always result in a _____.(1 point)
Mrrafil [7]

Answer:

polynomial...

3 0
3 years ago
Read 2 more answers
Which of the following words is related to division?
Lerok [7]

Answer:

the answer is quotient

hoped it helped

8 0
3 years ago
(1 point) Find the length L and width W (with W≤L) of the rectangle with perimeter 100 that has maximum area, and then find the
Vilka [71]

Answer:

Width = 25

Length = 25

Area = 625

Step-by-step explanation:

The perimeter of a rectangle is given by the sum of its four sides (2L+2W) while the area is given by the product of the its length by its width (LW). It is possible to write the area as a function of width as follows:

100 = 2L+2W\\L = 50-W\\A=LW=W*(50-W)\\A=50W - W^2

The value of W for which the derivate of the area function is zero is the width that yields the maximum area:

A=50W - W^2\\\frac{dA}{dW}=0=50 - 2W\\ W=25

With the value of the width, the length (L) and the area (A) can be also be found:

L=50-25 = 25\\A=W*L=25*25\\A=625

Since the values satisfy the condition W≤L, the answer is:

Width = 25

Length = 25

Area = 625

8 0
3 years ago
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