this I never got taught, need help bunch of points

The simplified form of the following expression is 51.3.

Given,

11(9²-5²)/(2²+8)

= 11(81-25)/(4+8)

= 11(56)/(12)

= 51.3

Expressions are simplified when they are rewritten in a concise manner and without any similar phrases. When simplifying an expression, we combine all similar terms and, if necessary, solve all of the supplied brackets, leaving just the, unlike words that cannot be further reduced.

Combining like terms together and leaving unlike terms alone is the fundamental principle for simplifying phrases. The following is a list of some of the guidelines for simplifying expressions:

Add the coefficients of two or more similar terms together, then include the common variable in the equation.

In the phrase a (b + c) = ab + ac, open the brackets using the distributive property.

Change the sign of all the phrases placed inside that bracket if there is a negative sign right outside the parenthesis to make things simpler.

Simply remove the bracket and put the words as they are, keeping the terms' original signs if there is a "plus" or other positive sign outside of it.

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Given :

Data interpretation refers to the process of using diverse analytical methods to review data and arrive at relevant conclusions. The interpretation of data helps researchers to categorize, manipulate, and summarize the information in order to answer critical questions.

The importance of data interpretation is evident and this is why it needs to be done properly. Data is very likely to arrive from multiple sources and has a tendency to enter the analysis process with haphazard ordering. Data analysis tends to be extremely subjective. That is to say, the nature and goal of interpretation will vary from business to business, likely correlating to the type of data being analyzed. While there are several different types of processes that are implemented based on individual data nature, the two broadest and most common categories are “quantitative analysis” and “qualitative analysis”

.

U.S. population in 2018 was estimated to be 327,200,000

people who were 18-29 years old = 30,357,000

people who were 65 years=  52,431,000

85% of the 30,357,000 people who are 18-29 years old have tried vaping or

electronic cigarettes = 30,357,000 x85/100

people ages 18-29 said they have tried vaping or e-cigarettes

=2,580,345

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Answer:

Yes

Step-by-step explanation:

It is a function look at the numbers

answer : 452\12 ×2

452/24

18.83333333 answer

Answer:

1/8

Step-by-step explanation:

(6m^-1n^0)^-3 =

= (6 × 1/3 × (-5)^0)^-3

= (6/3)^-3

= 2^-3

= 1/2^3

= 1/8

Answer:

Exact Distance = [tex]\boldsymbol{\sqrt{73}}[/tex] units

Approximate Distance = 8.544 units

====================================================

Explanation:

I'll relabel the points as A and B, and I'll be using the distance formula.

[tex]A = (x_1,y_1) = (-2,4) \text{ and } B = (x_2, y_2) = (6,1)\\\\d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}\\\\d = \sqrt{(-2-6)^2 + (4-1)^2}\\\\d = \sqrt{(-8)^2 + (3)^2}\\\\d = \sqrt{64 + 9}\\\\d = \sqrt{73}\\\\d \approx 8.544\\\\[/tex]

The exact distance is [tex]\sqrt{73}[/tex] units.

The approximate distance is roughly 8.544 units.

Round the approximate value however your teacher instructs.

Answer:

22.4

Step-by-step explanation:

28% of 80 = [tex]\frac{28}{100}[/tex] of 80

=[tex]\frac{28}{100}[/tex] of 80 = [tex]\frac{28}{100}[/tex]*80

cut the zeros

=[tex]\frac{28}{10}[/tex]*8

=[tex]\frac{28}{5}[/tex]*4

=[tex]\frac{112}{5}[/tex]

=22.4

The probability that a randomly selected person doesn't get a shave and doesn't get a haircut is 0.250.

The probability that a randomly selected person gets a shave, given that they get a haircut is 0.606.

The probability that a person selected at random would not get a shave or a haircut can be found as:

= 1 - (Prob. of haircut + Prob. of shave - Prob. of both)

= 1 - (0.66 + 0.49 - .40)

= 0.250

The probability that a random person would get a shave given they have gotten a haircut is:

= Probability of both / Probability of getting a haircut

= 0.40 / 0.66

= 0.606

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Answer:

b

Step-by-step explanation:

Trust me

The equation that could be used to determine, m, is 5m = 55.5 - 19. The correct option is C. m = (55.5 - 19)/5

From the question, we are to determine the equation that could be used to determine, m, the average number of miles she would have to ride to meet her goal

From the given information,

"Arianys wants to ride her bicycle 55.5 miles"

and

"She has already ridden 19 miles"

Thus,

The number of miles she needs to ride more is

55.5 miles - 19 miles

= 36.5 miles

If m is the average number of miles she would have to ride for 5 more days to complete her goal,

Then, we can write that  

m = 36.5/5

OR

m = (55.5 - 19)/5

Hence, the equation that could be used to determine, m, is 5m = 55.5 - 19. The correct option is C. m = (55.5 - 19)/5

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Answer:

5500 is correct Answer.

Please mark me as brainlist answer.

The number of pennies and nickels are 9 and 11 respectively.

Autumn has $.64 worth of pennies and nickels. She has a total of 20 pennies and nickels all together.

Therefore,

let

x = number of pennies

y = number of nickels

Hence,

x + y = 20

0.01x + 0.05y = 0.64

Multiply equation(i) by 0.01

0.01x + 0.01y = 0.2

0.01x + 0.05y = 0.64

0.04y = 0.44

y = 0.44 / 0.04

y = 11

Therefore,

x = 20 - 11

x = 9

Therefore, the number of pennies and nickels are 9 and 11 respectively.

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The quantity of water left in the barrel is 5.175 gallons. The correct option is the second option 5.175 gallons

From the question, we are to determine how much water is left in the barrel

From the given information,

"The barrel is filled with 18 gallons of water"

and

"Ryan used 9.7 gallons to water his garden in June"

After this time,

The quantity of water that would be left in the barrel will be 18 gallons - 9.7 gallons

= 8.3 gallons

Then,

3 and one eighth gallons in July

3 and one eighth = 3 1/8 = 3.125 gallons

The quantity of water that would be left is 8.3 gallons - 3.125 gallons

= 5.175 gallons

Hence, the quantity of water left in the barrel is 5.175 gallons. The correct option is the second option 5.175 gallons

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Answer:

b

Step-by-step explanation:

Answer:

Step-by-step explanation:   1x,2y

The fraction that represents the part of a whole, which is shaded gold is 3/7.

In Mathematics, fractions are represented as a numerical value, which defines a part of a whole.

Given is a big green rectangle divided into seven equal segments. From the image, it can be seen that 3 segments out of the seven are colored with gold. Therefore, we can write that -

Number of segments colored = n[c] = 3

Total segments = n[T] = 7

We know that a fraction defines a part of a whole. The green Rectangle is one whole, therefore it can be concluded that -

1 whole = 7 segments = n[T].

Number of segments colored = n[c] = 3.

Therefore, we can say that the fraction that represents the part of a whole, which is shaded gold is given by -

n[c] / n[T] = 3 / 7

Therefore, the fraction that represents the part of a whole, which is shaded gold is 3/7.

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[The given question is not complete. Please refer to the image attached for complete question]

The answer is 18 months as per the asked question and visible graph

Step-by-step explanation:

Find $900 and follow the horizontal line until it touches the red tilted line

As soon as it touches the red line, go down vertically and find where the line leads you and voila, it leads you to 18 months!

Answer:

the answer is 18 months==1 year 6 months

Answer:

x=8

Step-by-step explanation:

-x-6=-14

-x=6-14

x=14-6

x=8

Answer: A''=(-2, 2)

Step-by-step explanation:

A' = (2, -(-2)) = (2,2)   ==> the y-coordinate is negated when A reflects over the y-axis

A''=(-(2), 2) = (-2, 2).  ==> the x-coordinate is negated when A reflects over the x-axis

A''=(-2, 2)

Answer:

$623.50

Step-by-step explanation:

(100 - 29)% = 71%

71% = 71 / 100 = 0.71

Original price:
442.69 / 0.71 = 623.50

Hope this helps

Answer: 58 degrees

Step-by-step explanation:

a+b=90  ==> angles a and b are on a right angle which measures 90 degrees.

32+b=90

b=58 degrees

The logical function that represents the amount of workout Laura does in each week along with her simultaneous increase in workout can be given by Arithmetic Progression.

It is represented as An = A + (n-1)d. Here, A represents the first term, or the amount of workout done in first week, d represents common difference or the difference in workout done in next week to its previous week, n represents the number of terms or the number of weeks for which data is to be calculated and An represents the workout done in nth week.

Arithmetic progression refers to the sequence of numbers such that each succeeding number increases with respect to previous number by fixed/ constant value. Thus, there exists constant amount of difference between each consecutive pair of number.

Since, Laura's workout pattern varies such that the amount of workout she does in one week increases by same amount in next week, so we get an arithmetic progression of her workout pattern.

Hence, her workout pattern can be traced as A, A+d, A+2d, A+3A, ..., An.

Thus, An = A + [(n-1)*d]

A3 = A +[(3-1)*d] = A + [2d] = 20 ...(1)

A9 = A +[(9-1)*d] = A + [8d] = 50 ...(2)

A11 = A +[(11-1)*d] = A + [10d] = 60 ...(3)

Solving equation (1) and (2), we get d = 5 and A = 10.

Thus, we conclude by saying that the function of her exercise routine is given by arithmetic progression and the amount of workout that she increases each week is given by 'd' that is 5 minutes.

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The percent will be less than 30% after the year 2017

Let 'p' be the percent of 12th graders in a certain state who have ever used cigarettes for each of the years 2000 through 2014.

Let 't' be the number of years after 2000.

We have to find when the percent is less than 30%.

The function modelling the percent and the number of years through 2000 and 2014 is p= -1.773t+60.442

So first we need to find the number of years corresponding to 30%.

Substitute p = 30 in the above linear equation.

i.e., 30 = -1.773t+60.442

-1.773t = 30 - 60.442 = -30.442

Therefore, t = 30.442/1.773 = 17.17 ≈ 17 years

Since t denotes the number of years after 2000, when t = 17, the year is 2000+17 = 2017

So the percent will be less than 30% after the year 2017

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Answer:

u = 7 OR u = 13

Step-by-step explanation:

Using the zero property of multiplication, you know you have to make either u-7 or u-13 equal to zero. You get the two solutions from these two cases, where you make either of the equations equal to 0:

u - 7 = 0

Add 7 to both sides

u = 7

u - 13 = 0

Add 13 to both sides

u = 13

FINAL ANSWER: u = 7 OR u = 13

Answer:

2 is the y-int.

Step-by-step explanation:

Becuase the line runs through the y-axis at 2.

Tanisha takes 5/6 hours longer to mow all the lawns last week than this week.

Here, we are given that Tanisha mowed 5 lawns last week in 7/ 12 hours each.

Thus, the total time taken by her to mow 5 lawns = 5(7/12)

= 35/ 12 hours

Now, this week she mows the five lawns in 5/12 hours each

Thus, the total time taken by her = 5(5/12)

= 25/12 hours

Therefore, the difference between the time taken by her last week and this week will be-

35/ 12 - 25/ 12

= (35 - 25)/ 12

= 10/ 12

= 5/6

Thus, Tanisha takes 5/6 hours longer to mow all the lawns last week than this week.

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1. The temperature change on each day is as follows:

2. The temperature change on Day 1 was 32.31°C.

3. The temperature changed the most on Day 2.

A temperature change is a process whereby the degree of hotness or coldness varies from one time to another.

In this instance, the temperature changes can be computed by subtracting the temperature at Sunrise from the temperature at Sunset in degrees Centigrade or degrees Fahrenheit, as the case may be.

Daily Temperatures

                   Temperature at    Temperature at   Temperature

                       Sunrise (°C)           Sunset (°C)          Change

Day 1                - 13.94                    18.37                   32.31°C

Day 2                 - 9.12                   28.17                   37.29°C

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Answer:

Neck

Step-by-step explanation:

Which one is closest to your head?

T-T