2 years ago

What is the square root of -1?

Mathematics

2 answers:

marishachu [46]2 years ago

7 0

It is i

......................

Setler [38]2 years ago

3 0

Sorry, there is not any square root of -1.

Thank you♥♥

You might be interested in

a social worker is paid $264 to conduct an initial home site visit. how much does the worker earn for 8 intial site visits

Paul [167]

Answer:

its 264 times 8 so the answer is 2112

3 0

3 years ago

Read 2 more answers

What is the solution to 3 x 2. 4 greater-than-or-equal-to 3. 0? x greater-than-or-equal-to 0. 2 x greater-than-or-equal-to 0. 6

IRINA_888 [86]

Answer:

express the following as a fraction and a ratio

6 0

2 years ago

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.3. (Round your ans

Maurinko [17]

Answer:

0.0039 is the probability that the sample mean hardness for a random sample of 12 pins is at least 51.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 50

Standard Deviation, σ = 1.3

Sample size, n = 12

We are given that the distribution of hardness of pins is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

Standard error due to sampling =

$=\dfrac{\sigma}{\sqrt{n}} = \dfrac{1.3}{\sqrt{12}} = 0.3753$

P(sample mean hardness for a random sample of 12 pins is at least 51)

$P( x \geq 51) = P( z \geq \displaystyle\frac{51 - 50}{0.3753}) = P(z \geq 2.6645)$

$= 1 - P(z < 2.6645)$

Calculation the value from standard normal z table, we have,

$P(x \geq 51) = 1 - 0.9961= 0.0039$

0.0039 is the probability that the sample mean hardness for a random sample of 12 pins is at least 51.

3 0

3 years ago

Select all expressions that represent the area of the given triangle

Mice21 [21]

Answer:

A=1/2(12x16)

Step-by-step explanation:

because it's the area of the square divided by two

3 0

3 years ago

Angle A and angle B are supplementary angles, if angle B equals 73°, what is the measurement of angle A?

balandron [24]

Supplementary means adds to 180
A+B=180
B=73
A+73=180
minus 73 both sides
A+73-73=180-73
A+0=107
A=107

A=107 degrees

7 0

3 years ago

Read 2 more answers