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3 years ago

What is the quotient? 1/2 ÷ 11 A. 22 B. 11/2 C. 2/11 D.1/22

Mathematics

2 answers:

kenny6666 [7]3 years ago

8 0

1/2 / 11/1
1/2 * 1/11
1 / 22

Therefore it is D

valina [46]3 years ago

3 0

The Answer is D: 1/22

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Which statement is true? WILL GIVE BRAINLIEST! (If you are right!)

Setler79 [48]

I would try B.

I'm not positive i got it right
(sorry if its wrong)

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4 0

3 years ago

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given the value points (0, 25), (5, 20), (12, 13), (9, 16) and (21, 4), find the value of the correlation coefficient for the da

lara [203]

Plug all the point into your calculator. Not sure if you need it y=mx+b but the R for that is r= -1

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3 years ago

An isotope of iodine has a mass of 134 amu. How many neutrons does the

Nina [5.8K]

Answer:

The correct option is C: the isotope of iodine contains 81 neutrons.

Step-by-step explanation:

The mass (A) of the iodine isotope is given by:

$A = Z + N$

Where:

Z: is the number of protons

N: is the number of neutrons

For iodine Z= 53, so if A = 134 the number of neutrons is:

$N = A - Z = 134 - 53 = 81$

Therefore, the correct option is C. The isotope of iodine contains 81 neutrons.

I hope it helps you!

5 0

3 years ago

Suppose the waiting times in an emergency room are normally distributed with a mean (mean) of 40 and a standard deviation (sigma

kipiarov [429]

Answer:

0.68269

Step-by-step explanation:

When we are to find the z score for population where a random sample is picked, the z.score formula we use is

z = (x-μ)/Standard error, where

x is the raw score,

μ is the population mean

Standard error = σ/√n

σ is the population standard deviation

n = random number of samples

For : x = 38 minutes, μ = 40, σ = 10, n = 5

z = 38 - 40/10 /√25

= -2/10/5

= -2/2

= -1

Determining the probability value using z table

P(x = 38) = P(z = -1)

= 0.15866

For : x = 42 minutes, μ = 40, σ = 10, n = 25

z = 42 - 40/10 /√25

= 2/10/5

= 2/2

= 1

Determining the probability value using z table

P(x = 42) = P(z = 1)

= 0.84134

The probability that their average waiting time will be between 38 and 42 minutes is calculated as

P(-Z<x<Z)

= P(-1 < x < 1)

= P(z = 1) - P(z = -1)

= 0.84134 - 0.15866

= 0.68269

Therefore, the probability that their average waiting time will be between 38 and 42 minutes is 0.68269

3 0

4 years ago

The population of a small town in Alabama is 382 people. If the growth rate is 0.7%, what will its population be in 30 years?

goldenfox [79]

Formula for growth:

y = initial • (percent growth + 1)^time/frequency of growth

So, since initial population is 382

Percent growth is 0.007

The time is 30 years

And it goes it by .07% every 1 year,

y = 382 • (1.007)^30/1

y= 470.9203732 people

Since we can’t have 0.9 of a person, the population after 30 years will be 470 people.

4 0

3 years ago