4 years ago

What is the square root of -1?

Mathematics

1 answer:

Alenkasestr [34]4 years ago

4 0

Answer: The square root of -1 is NaN or i. It doesn't have one

Step-by-step explanation:

√−1

=NaN or i

You might be interested in

A toy company wants to sell 1600 toy airplanes this year. so far they have sold 600. what percent of the sales goal have they re

Taya2010 [7]

the answer is about 37.5%

7 0

4 years ago

A binomial probability has p=.20 and n=100, what are the mean and standard deviation?

pychu [463]

Mean: $np=100\times0.20=20$

Standard deviation: $\sqrt{np(1-p)}=\sqrt{100\times0.20\times0.80}=4$

4 0

3 years ago

-5y + 12 + 8y − 6 − 2 = ______ help plz

Sladkaya [172]

Answer:

(combine like terms)

-5y + 12 + 8y − 6 − 2

3y+12-8

3y+4

3 0

3 years ago

A real estate company is interested in the ages of home buyers. They examined the ages of thousands of home buyers and found tha

egoroff_w [7]

Answer:

Between 21 years and 75 years

Step-by-step explanation:

Given that a real estate company is interested in the ages of home buyers. They examined the ages of thousands of home buyers and found that the mean age was 48 years old, with a standard deviation of 9 years.

X the ages of home buyers is N(48, 9)

a) $30\leq x\leq 66\\|x-48|\leq 18\\|x-48|\leq 2\sigma$

Hence using Cheby chev inequality

$P(|x-48|\leq 2\sigma)\geq 1-\frac{1}{2^2} \\=0.75$

b) $25.5\leq x\leq 70.5\\|x-48|\leq 22.5\\|x-48|\leq 1.5\sigma$

$P(|x-48|\leq 1.5\sigma)\geq 1-\frac{1}{1.5^2} \\=0.556$

c) Using normal distribution we have

$P(|x-48|\leq 2\sigma)=0.95$

d) z value is 2.97

Hence x lies between

$(48-9*2.97, 49+9*2.97)\\=(21.27,74.73)$

Between 21 years and 75 years

4 0

4 years ago

1) Jan is buying new flooring for her kitchen. The kitchen is a rectangle that is 3

Temka [501]

Answer:

6 meters of Flooring.

Step-by-step explanation:

I could be wrong but I’m pretty sure this question is Length x Width to find the Area of the “Room” or “Triangle.”. <3

5 0

3 years ago