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4 years ago

The temperature one winter morning is -8 °f define

Mathematics

1 answer:

AnnZ [28]4 years ago

5 0

Umm its cold out. the temperature is -8. what are you asking?

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Assume that when adults with smartphones are randomly selected, 48% use them in meetings or classes. If 55 adult smartphone us

podryga [215]

This is a problem of Binomial Probability.

Success Rate = p = 0.48
Sample Size = n = 55
Number of success = x = 22

We are to find $P(X \geq 22)$ i.e. that probability that atleast 22 adults use the smartphone in meetings or class.

The probability can be calculated using the Binomial Calculators and it comes out to be 0.907.

This means there is 0.907 or 90.7% probability that there are atleast 22 adults among the 55 selected adults who use cell phones in meeting or class.

6 0

3 years ago

If line A has a slope of 7/8, what is the slope of line B that is perpendicular to line A

faltersainse [42]

Answer:

8/7

Step-by-step explanation:

6 0

3 years ago

Use the table to determine the appropriate model of the function, x 0 1 2 3

Sloan [31]

Points Lying on the undefined curve are

x : 0 1 2 3 4

f(x): 3 7 29 87 199

Plotting the points on the coordinate plane

As you will see, the value of x increases , value of y increases .

It is not linear, because slope between two points is not same.

Neither quadratic nor cubic , it is not cutting x axis .

So, As value of x increases, value of y does not increases by a fixed quantity, but it increases.

So, option (D) Exponential ,Function word is the right word Describing these points.

3 0

3 years ago

The following histogram presents the amounts of silver (in parts per million) found in a sample of rocks. One rectangle from the

gladu [14]

Answer:

The height of the missing rectangle is 0.15

Explanation:

The image attached has the mentioned histogram.

Such histogram presents the relative frequencies for the clases [0,1], [1,2],[2,3], [4,5], and [5,6] Silver in ppm.

Only the rectangle for the class [3,4] is missing.

The height of each rectangle is the relative frequency of the corresponding class.

The relative frequencies must add 1, because each relative frequency is calculated dividing the absolute class frequency by the total number in the sample; hence, the sum of all the relative frequencies is equal to the total absolute class frequencies divided by the same number, yielding 1.

In consequence, you can sum all the known relative frequencies and subtract from 1 to get the missing relative frequency, which is the height of the missing rectangle.

1. Sum of the known relative frequencies:

0.2 + 0.3 + 0.15 + 0.1 + 0.1 = 0.85

2. Missing frequency:

1 - 0.85 = 0.15

3. Conclusion:

The height of the missing rectangle is 0.15

4 0

3 years ago

Use Properties to Add Find the sum. Write the addition property you used. 1. 28 + 29 + 42 =

ludmilkaskok [199]

You add all numbers and it will equal 99

4 0

3 years ago