3 years ago

A data set has a mean of 80. The value 83 lies one standard deviation above the

1 answer:

5 0

Answer:

Margin of errors, in statistics, is the degree of error in results received from random sampling surveys. A higher margin of error in statistics indicates less likelihood of relying on the results of a survey or poll, i.e. the confidence on the results will be lower to represent a population.

Step-by-step explanation:

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1. Which polynomial is equal to (4x^2 - 3x - 1)+(-3x^2 + 5x - 8)

RSB [31]

Answer:

Step-by-step explanation:

x4+28+584+-4847-+6384

did it for me either ir you excited for the good of a great day I just want it to be a cube has

4 0

3 years ago

Find z1z2 if z1 = 2/5(cos63° + isin63°) and z2 = 10/3(cos117° + isin117°).

Airida [17]

Answer:

-10/3 is the answer

Step-by-step explanation:

Given are two complex numbers as

$z1=\frac{2}{5} (cos63 + isin63)\\z2=\frac{10}{3} (cos 117 + isin117})$

Recall Demoivre theorem as

(cosA+isinA)(cos A+isin B) = cos(A+B)+isin(A+B)

Hence here we have sum of angles as

A+B = 63+117 =180

$z1z2=\frac{2}{5} \frac{10}{3} (cos180+isin180)$

= $\frac{-10}{3}$

Since sin180=0 and cos 180=-1

7 0

4 years ago

You are debating about whether to buy a new computer for $800.00 or a refurbished computer with the same equipment for $640.00.

Naily [24]

Total deduction

7.65+12+8
19.65+8
27.65%

Now

Earnings after deduction

10-10(0.2765)
10-2.765
7.335$

Total hours:-

640/7.335
87.25
87hours

7 0

2 years ago

Please help as soon as possible

MAVERICK [17]

Answer: Your Answer is: -8/17

7 0

3 years ago

In the given diagram, which of the following pairs of angles are alternate interior angles?

castortr0y [4]

Answer:

3 and 6

4 and 5

Step-by-step explanation:

Alternate interior angles are on the opposite sides of the transversal, t, and between the parallel lines, r and s

3 and 6 are alternate interior angles

4 and 5 are alternate interior angles

3 0

2 years ago

Read 2 more answers