Mathematics College

simplify 8x + y - 2x.

Answers

Answer 1

Answer:

6x + y

Step-by-step explanation:

Answer 2

The answer is ; 6x+y

Related Questions

which has the greater magnitude 47 dollars or -86 dollars

Answers

Answer:

47 dollars.

Step-by-step explanation:

Perform the following mathematical operation, and report the answer to the appropriate number of significant figures.

1204.2 + 4.72613 = [?]

The answer is not 1208.92613 / 1200

Answers

Answer:

1,208.92613

Step-by-step explanation:

this is the answer

2.75 round to the nearest hundreth

Answers

Answer:

Its already rounded. Rounded to tenths place would be 2.8

Step-by-step explanation:

5 or higher makes you round up. if its a 4 or lower it would stay the same.

A neighborhood is trying to set up school carpools, but they need to determine the number of students who need to travel to the elementary school (ages 5-10), the middle school (ages 11-13), and the high school (ages 14-18). A histogram summarizes their findings:

Histogram titled Carpool, with Number of Children on the y axis and Age Groups on the x axis. Bar 1 is 5 to 10 years old and has a value of 3. Bar 2 is 11 to 13 years old and has a value of 7. Bar 3 is 14 to 18 years old and has a value of 4.

Which of the following data sets is represented in the histogram?

{3, 3, 3, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4}
{5, 10, 4, 11, 12, 13, 12, 13, 12, 11, 14, 14, 19, 18}
{5, 6, 5, 11, 12, 13, 12, 13, 14, 15, 11, 18, 17, 13}
{3, 5, 10, 11, 13, 7, 18, 14, 4}

Answers

The correct answer is that the data set {3, 7, 4} is represented in the given histogram.(option-a)

The given histogram represents the number of children in each age group who need to travel to school. Since the histogram has only three bars, we can conclude that there are only three age groups.

The first bar represents children aged 5-10, of which there are 3. The second bar represents children aged 11-13, of which there are 7. The third bar represents children aged 14-18, of which there are 4.

Therefore, the data set that is represented in the histogram is:

{3, 7, 4}

None of the other data sets given match the values in the histogram. The first data set has duplicate values and is not sorted by age group. The second data set includes ages that are not represented in the histogram. The third data set has values for ages 6, 11, 12, 13, 14, 15, 17, and 18, but the histogram does not have bars for all those ages. (option-a)

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Which of the following functions is graphed below?

Answers

Answer:

Step-by-step explanation:

marian has a savings account with $21,390 if she earns $4,100 per month, what is the maximum she can spend on a house?

Answers

Answer:

The answer is: 4100x + 21390

We need to know the number of months Marian wants to save to get the specific value.

Step-by-step explanation:

In the equation, we will need to calculate the maximum amount of money Marian can spend on the house.

We can calculate the maximum amount of money Marian can spend on a house by multiplying her monthly income by the number of months she would want to save.

Solve the problem:

Marian earns $4,100.00 per month

Suppose Marian wants to save for x months, then the maximum amount that she can spend on the house is:

4100 * x + 21390

Draw the conclusion:

The answer is: 4100x + 21390

We need to know the number of months Marian wants to save to get the specific value.

Hope this helps!

Ten cards numbered from 1 to 10 inclusive are placed in a hat Irene takes a card out of the hat without looking what is the probability that she takes out:
A] the number 10
B] an odd number
C] a number greater than 4
D] a prime number
E] a number between 5 and 9?

Answers

A] 1/10
B] 5/10
C] 6/10
D] 4/10
E] 3/10

what would be the answers for these ????

Answers

Answer:

Step-by-step explanation: the y would be 50

Find the amount of tax and the tax rate. Round to two decimal places.

Cost of item: $71

Selling price: $86.45

Tax amount: $

Tax rate: %

Answers

well, the tax amount is simple, it was $71 and it went up to $86.45, that's a 15.45 difference, so that IS the tax amount.

now, if we take 71(origin amount) to be the 100%, what's 15.45 off of it in percentage?

$\begin{array}{ccll} amount&\%\\ \cline{1-2} 71 & 100\\ 15.45& x \end{array} \implies \cfrac{71}{15.45}~~=~~\cfrac{100}{x} \\\\\\ 71x=1545\implies x=\cfrac{1545}{71}\implies x\approx 21.76$

what is the slope of (8,3) (-5,3)

Answers

Answer:

-13x. (I think)

Step-by-step explanation:

Determine whether the following triangles are congruent. If they are congruent, give a congruency statement.

Answers

Answer:

Congruent, ASA Congruency Theorem

Step-by-step explanation:

HGI and KJI are vertical angles, therefore equalAngle H and K are congruentGJ bisects HK at Point I, therefore segments HI and KI are congruent

for any given flight, an airline tries to sell as many tickets as possible. suppose that on average, 10% of ticket holders fail to show up, all independent of one another. knowing this, an airline will sell more tickets than there are seats available, and hope that there is a sufficient number of ticket holders who do not show up to compensate for its overbooking. using the central limit theorem, determine n, the maximum number of tickets an airline should sell on a flight with 300 seats so that it can be approximately 99% confident that all ticket holders who do show up will be able to board the plane. use the 1/2-value-correction (called de moivre-laplace approximation) in your calculation.

Answers

The maximum number of tickets an airline should sell on a flight with 300 seats so that it can be approximately 99% confident that all ticket holders who do show up will be able to board the plane is 324.

The maximum number of tickets an airline should sell on a flight with 300 seats so that it can be approximately 99% confident that all ticket holders who do show up will be able to board the plane is 326. This is calculated using the 1/2-value correction (de Moivre-Laplace Approximation). The 1/2-value correction assumes the normal distribution is symmetric, with the mean in the middle of the distribution. This means that the probability of being above the mean is equal to the probability of being below the mean. Since the airline wants to be 99% confident that all ticket holders who do show up will be able to board the plane, this means that the airline needs to sell enough tickets such that the probability of being above the mean (300 tickets sold) is 99%. Using the 1/2-value correction, the airline needs to sell 326 tickets to achieve this confidence level.

This is calculated as follows: P(x > 300) = 0.99 P(x < 300) = 0.01 Using the 1/2-value-correction:

P(x = 300 + 0.5) = 0.99

Therefore, x = 300 + 0.5=> x = 300.5 => x = 326

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what is the difference between the sum of 1/2 and 1/2 and the product of 1/2 and 1/2

Answers

Answer:

0.75 or 3/4

Step-by-step explanation:

The sum of 1/2 and 1/2 is 1. (1/2 + 1/2 = 1)

The product of 1/2 and 1/2 is (1*1)/(2*2) = 1/4.

If you subtract 1/4 from 1, you get 3/4.

The difference between the sum of 1/2 and 1/2 and the product of 1/2 and 1/2 will be 3/4.

What is Algebra?

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

The difference between the sum of 1/2 and 1/2 and the product of 1/2 and 1/2 will be given as,

⇒ (1/2 + 1/2) - [(1/2)(1/2)]

⇒ 1 - 1 / 4

⇒ (4 - 1) / 4

⇒ 3 / 4

The difference between the sum of 1/2 and 1/2 and the product of 1/2 and 1/2 will be 3/4.

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Find the value of X algebraically. Show your work.

Answers

Answer: 21

Step-by-step explanation:

We know 9x - 56 is equal to 6x + 7

So:

9x - 56 = 6x + 7

Add 56 to each side

9x = 6x + 63

Subtract 6x from each side

3x = 63

Now divide each side by 3

x = 21

the questions in this activity refer back to prelab 0, which would be a good place to look if you need any help. in test a, suppose you make 100 experimental measurements of some quantity and then calculate mean, standard deviation, and standard error of the numbers you obtain. in test b, suppose you make 400 experimental measurements of the same quantity and you again calculate mean, standard deviation, and standard error.
1) Which of the following statements is the most likely description of the comparison of the standard deviations found in Test A and Test B? o The standard deviations found in Test A and Test B will be about the same. o The standard deviation found in Test A will about be twice as big as the standard deviation found in Test B. o The standard deviation found in Test A will about be four times as big as the standard deviation found in Test B. o The standard deviation found in Test B will about be twice as big as the standard deviation found in Test A. o The standard deviation found in Test B will about be four times as big as the standard deviation found in Test A. Submit 2) Which of the following statements is the most likely description of the comparison of the standard errors found in Test A and Test B? o The standard errors found in Test A and Test B will be about the same. o The standard error found in Test A will about be twice as big as the standard error found in Test B. o The standard error found in Test A will about be four times as big as the standard error found in Test B. o The standard error found in Test B will about be twice as big as the standard error found in Test A. o The standard error found in Test B will about be four times as big as the standard error found in Test A. Submit 3) This question and the next one refer to a hypothetical experiment in which you slide red and green blocks down an identical ramp to see how far they go before stopping. After doing three trials of each case you find that the best estimate of the distance slid by red blocks is 15 + 3 feet and that the best estimate of the distance slid by green blocks is 25 + 4 feet. Find the t' parameter for the comparison of the distance slid by red and green blocks. o t' = 2.0 o t' = 2.5 o t' = 3.0 o t' = 3.5 o t' = 4.0 Submit 4) Suppose the experiments described in Question 3 are testing the claim that the distance slid by a block does not depend on the color of the block. Which of the following conclusions regarding this claim is most consistent with your data? o The claim is true. o The claim is false. o The claim might be true or it might be false.

Answers

The value of the standard deviation does not change and remains the same.

Given, a retired statistic professor has recorded final exam results for decades. the mean final exam score for the population of a student is 82.4 with a standard deviation of 6.5.

The mean μ = 82.4

The standard deviation σ = √[ ((x - μ)2 + (y - μ)2 + (z - μ)2)/3 ]

we have to find the variance,

We now add a constant k to each data value and calculate the new mean μ'.

μ' = ((x + k) + (y + k) + (z + k)) / 3 = (x + y + z) / 3 + 3k/3 = μ + k

We now calculate the new mean standard deviation σ'.

σ' = √[ ((x + k - μ')2 +(y + k - μ')2+(z + k - μ')2)/3 ]

Note that x + k - μ' = x + k - μ - k = x - μ

also y + k - μ' = y + k - μ - k = y - μ and z + k - μ' = z + k - μ - k = z - μ

Therefore σ' = √[ ((x - μ)2 +(y - μ)2+(z - μ)2)/3 ] = σ

If we add the same constant k to all data values included in a data set, we obtain a new data set whose mean is the mean of the original data set PLUS k. The standard deviation does not change.

Hence, the standard deviation does not change.

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Which angles below are equal to ∠CDB?

Answers

Answer:

(x) ∠CAB

Step-by-step explanation:

In ΔCOD and ΔBOA

$\frac{OA}{OB} = \frac{OD}{OC} \\\\\implies \frac{OC}{OB} = \frac{OD}{OA}$

Also,

∠COD = ∠BOA (vertically opposite angles)

⇒ ΔCOD and ΔBOA are similar

⇒ ∠CDO = ∠BAO

⇒ ∠CDB = ∠BAC

⇒ ∠CDB = ∠CAB

In •A find CE if BA=7.35.

Answers

The value of CE is 14.7 units.

What if the diameter of a circle?

The diameter of a given circle is a straight line which passes through the center of the circle and divides it into two equal semi-circles.

So that in the given circle with center A, we have;

CE = BD (diameter of a given circle)

BA = EA = CA = DA (radius of a given circle)

CE is the diameter of the circle, and BA is the radius, so that;

CE = 2*BA

= 2*7.35

= 14.7

CE = 14.7

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write an equation of the line with a slope of 2 and a y-intercept of 5

Answers

Answer:

y= 2x + 5

Step-by-step explanation:

Listed in the table is the percentage of students who choose each type of milk at lunchtime.

Plain milk: 25%
Chocolate milk: 48%
Strawberry milk: 21%
Banana milk: 6%
Use the table to determine the measure of the central angle you would draw to represent banana milk in a circle graph.

A. 21.6° B. 216° C.338.4° D.33.7°

Pls help me

Answers

Answer:

Step-by-step explanation:

Banana milk is 6%. So we need to work out 6% of 360 because angles in a circle add up to 360. So we can do this by dividing 360 by 100 then timsing that by 6 to get 21.6 degrees, which is A.

Answer:

21.6

Step-by-step explanation:

6% of 360=21.6

Cole worked 20 hours and earned $500. How many hours must Cole work in order to earn $700?

Answers

Hi! I'm Carriyana!! Glad to help you today! :)

Cole needs to work 28 hrs!!

My steps:

First I did 500/20 and got 25

Then I did 700/25

And ended up with 28

So the answer should be...

~28 hrs!~

Answer:

28 hours

Step-by-step explanation:

To calculate how many hours Cole must work to earn $700, we must first calculate how much he makes per hour.

This can be done by taking the total amount he earned and dividing by the number of hours:

$500 / 20 hours = $25 an hour

Since we now know how much he makes an hour, we can determine how many hours it takes to earn $700 by using a similar equation to the one above:

Total Money / Total Hours = $ an hour

$700 / Total Hours = $25 an hour

It can be represented algebraically as:

700 / x = 25

Then, solve for x:

(700 / x) * x = (25) * x

700 = 25x

(700) / 25 = (25x) / 25

28 = x

28 hours

Gwen is two years older than her cousin Julie. Aunt Jess is twice as old as uncle Mark. Julie’s age is 26 less than the sum of aunt Jess and uncle Mark’s ages. The twins are 2 years younger than one-third Gwen’s age. Mark celebrated his 8th birthday at the reunion 10 years ago

Answers

If mark celebrated his 8th birthday 10 years ago then mark is 18 years old. Jess is twice as old as mark so Jess is 36 years old. Julie is 26 less than mark and jess combined so Julie is 28 years old. Gwen is two years older than Julie so Gwen is 30 years old. The twins are 2 less than 1/3 of gwen so the twins are 8 years old

Every day, Garrett's burrito stand uses 1 7/10 bags of tortillas. How many days will 8 1/2 bags of tortillas last?

Answers

Answer: 5 days.

Step-by-step explanation: To solve this problem, we first need to convert 1 7/10 bags of tortillas to a decimal number. We can do this by dividing the numerator of the fraction (7) by the denominator (10) and adding the result to the whole number (1) to get 1 + 7/10 = 1.7 bags of tortillas.

Next, we can divide the number of bags of tortillas that Garrett's burrito stand uses per day (1.7 bags) into the total number of bags of tortillas that are available (8.5 bags) to find out how many days the tortillas will last: 8.5 bags / 1.7 bags/day = 5 days

Therefore, the 8 1/2 bags of tortillas will last for 5 days.

Which of the three brands had the largest range?

Answers

Based on the dotplot, the brand whose data set that has the largest range is Brand C.

What is the Range of a Data Set?

The range of a data set is a measure that represents the difference between the largest and the smallest values in the set. It provides a simple way to understand the spread or variability of the data. To calculate the range, you subtract the smallest value from the largest value in the data set.

Given the dotplot above, we have:

Brand A's Range = 15 - 4 = 11

Brand B's Range = 14 - 11 = 3

Brand C's Range = 20 - 6 = 14

The brand with the largest range is Brand C.

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What is 24 – 6х3+52 - (16+ 2)?
ОА.
9
ОВ.
23
Ос.
71
OD.
496

Answers

Answer:

Step-by-step explanation:

24 – 6х3+52 - (16+ 2)

PEMDAS states we do the paranthesis 1st

24 – 6 х 3 + 52 - (18)

Next, we do the multiplication

24 - 18 + 52 - 18

Since it's just adding & subtracting, we go from left to right

please help me i dont understand

Answers

Answer:

multipy the length of the side by the scale factor

What is the x -coordinate of the x-intercept of the function 2/3y=−6x+12?

Answers

Answer:

y=9x+18

Step-by-step explanation:

to get 9, use the rise over run way. Using that, I got 9/1, which is equivalent to 9. Then you MUST add x after, so then you get 9x. The last number is always the y intercept, or where the line meets the vertical line. That was 18.

Hope I helped :)

Given: A (-3, 5) and B (4, -2), what is the length of AB?

Answers

After considering the given data we come to the conclusion that the length of AB is 12.124 units, under the condition that A (-3, 5) and B (4, -2) are the given coordinates.

The distance between two points in a plane can be found using the distance formula which is an application of the Pythagorean theorem. The formula is given by d=√ ( ((x₂ – x₁ )² + (y₂ – y₁ )²)

Here (x₁, y₁) and (x₂, y₂) are the coordinates of the two points.

Applying the given coordinates of A (-3, 5) and B (4, -2), we can evaluate the distance between them as follows:

d = √( (4 - (-3))² + (-2 - 5)² )

= √(7² + (-7)²)

= √(98 + 49)

= √147

= 12.124

Therefore, the length of AB is approximately 12.124 units.

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Harry's amount of money is 75% of Kayla's amount of money

Answers

Answer:

Add vaslues

Step-by-step explanation:

How much money does kayla have?

Which of the following functions has an initial value of 4 and a rate of change of -2?

Answers

Answer:

the. First oneFiFiraone

Step-by-step explanation:

the first one

Question 3(Multiple Choice Worth 2 points) (01.01 MC) What is seven hundred thousand one hundred eighty-two and nine thousandths written in expanded form 700,000+100 + 80 +2 +0.009 700,000+ 10,000+8,000 + 200 +0.9 7,000,000+ 100,000+ 9,000 + 80 +2 7,000,000+ 100,000+80,000 +2 +0.09

Answers

The number in an expanded form is 700,000 + 182 + 0.009

How to write the number in an expanded form?

The number is given as:

seven hundred thousand one hundred eighty-two and nine thousandths

Next, we split the numbers:

seven hundred thousand = 700,000

one hundred eighty-two = 182

and nine thousandths = 0.009

Next, we add the numbers

700,000 + 182 + 0.009

Hence, the number in an expanded form is 700,000 + 182 + 0.009