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4 years ago

What is the square root of -100?

Mathematics

2 answers:

Brut [27]4 years ago

6 0

Answer:

10 i

Hope this helps Buddy!

~Courtney

Serggg [28]4 years ago

4 0

The best answer is "-10 or 10 i." In order to find the square root of a number you have to multiply two of the same numbers to get the square root. For example 10 × 10 = 100 which would mean the square root of 100 is 10 but in this case the square root would be -10 because the 100 is a negative number.

Hope this helps!

Nonportrit

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allochka39001 [22]

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3 years ago

A company is considering two different campaigns, A and B, for the promotion of their product. Two tests are conducted in two ma

lisabon 2012 [21]

Answer:

There is no sufficient evidence of a difference in the effectiveness of the two ad campaigns.

Step-by-step explanation:

We are given the following in the question:

$x_1 = 18\\n_1 = 60\\x_2 = 22\\n_2 = 100$

Let p1 and p2 be the proportion from campaign A and B, respectively, that are defective.

$p_1 = \dfrac{x_1}{n_1} = \dfrac{18}{60} = 0.3\\\\p_2 = \dfrac{x_2}{n_2} = \dfrac{x_2}{n_2} = \dfrac{22}{100}= 0.22$

First, we design the null and the alternate hypothesis

$H_{0}: p_1 = p_2\\H_A: p_1 \neq p_2$

We use Two-tailed z test to perform this hypothesis.

Formula:

$\text{Pooled P} = \dfrac{x_1+x_2}{n_1+n_2}\\\\Q = 1 - P\\\\Z_{stat} = \dfrac{p_1-p_2}{\sqrt{PQ(\frac{1}{n_1} + \frac{1}{n_2})}}$

Putting all the values, we get,

$\text{Pooled P} = \dfrac{18+22}{60+100} = 0.25\\\\Q = 1 - 0.25 = 0.75\\\\Z_{stat} = \dfrac{0.3-0.22}{\sqrt{0.25\times 0.75(\frac{1}{60} + \frac{1}{100})}} = 1.1313$

Now, we calculate the p-value from the table at 0.05 significance level.

P-value = 0.25789

Since the p-value is greater than the significance level, we fail to reject the null hypothesis and accept it.

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6 0

4 years ago

Find the difference between 1,2 and 5,2

marta [7]

Answer:

d= 4

Step-by-step explanation:

The DISTANCE between the two points can be found by the distance formula

d^2 = (x1-x2)^2 + (y1-y2)^2

( 1-5)^2 + (2-2)^2

= 16

d = 4

You can just LOOK and realize the two points have the same y values...so the distance is just the distance between the x coordinates 5 -1 = 4

6 0

2 years ago

Blue earns 5.5% commission working at Advian. If he sells $85,000 worth of goods during the quarter,

OlgaM077 [116]

Answer:

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6 0

3 years ago

Read 2 more answers

Pleses help me thank you

OLEGan [10]

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