18. You and your friend are selling your old CDs. Your friend sells 14 the first
day and x the next day. You sell y the first day and 6 the next day. Write an
expression that shows that the total number of CDs sold both ddays. Rewrite
your answer using the Commutative Property of Addition

Answers

Answer 1

9514 1404 393

Answer:

  = x + y + 20

Step-by-step explanation:

There are a couple of ways you could write this.

  friend sales + your sales

  = (14 +x) +(y +6)

  = (x +14) +(6 +y) . . . . commutative property used twice

  = x +14 +6 +y = x +20 +y

  = x + y + 20 . . . . . . . commutative property used again

__

  first-day sales + second-day sales

  = (14 +y) + (x +6)

  = (y +14) +(6 +x) . . . . commutative property used twice

  = y +14 +6 +x = y +20 +x

  = y +x +20 . . . . . . . . commutative property used again

  = x + y + 20 . . . . . . . and again

_____

Additional comment

We also used the associative property (to move parentheses) and the properties of addition of integers to simplify the sum. We have chosen to put the variables in lexicographical order, a sort of standard.


Related Questions

1. A football team charges $30 per ticket and averages 20,000 people per game. Each
person spends an average of $8 on concessions. For every drop of $1 in price, the
attendance rises by 800 people. What ticket price should the team charge to
maximize total revenue? Calculate the TR max.

2. Find the extrema of f(x)=x^3 - 27x - 6

Answers

Question: A Football Team Charges $30 Per Ticket And Averages 20,000 People Per Game. Each Person Spends An Average Of $8 On Concessions. For Every Drop Of $1 In Price, The Attendance Rises By 800 People. What Ticket Price Should The Team Charge To Maximize Total Revenue? Calculate The TR Max.

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See the answer

A football team charges $30 per ticket and averages 20,000 people per game. Each person spends an average of $8 on concessions. For every drop of $1 in price, the attendance rises by 800 people. What ticket price should the team charge to maximize total revenue? Calculate the TR max.

$50

                                                                                                                                             

HELP
The perimeter of a rectangular pool is 740 yd. If the length is 30 yd less than four times the width, find the length and width.


The length of the rectangular pool is __ yd.

Answers

The length of the rectangle is 12 yd

4 lbs of tomato’s cost $14 complete the double number line so that it shows how much it will cost for up to 8 lbs of tomato’s

Answers

Answer:

the answer is 28$ because since the lbs get doubled so ypu also have to double the cost

What is the z-score of x, when x = 1 and X ~ N (12,3)? Must Show Working

Answers

Answer:

=1−12/3≈−3.67

Step-by-step explanation:

The z-score of x = 1, when x ~ N(12, 3), is approximately -3.6667.

To find the z-score of x when x = 1, we'll use the formula for z-score:

z = (x - μ) / σ

Given:

x = 1

μ (mean) = 12

σ (standard deviation) = 3

Substituting these values into the formula, we get:

z = (1 - 12) / 3

Calculating the numerator:

1 - 12 = -11

Dividing the numerator by the denominator:

-11 / 3 ≈ -3.6667

Therefore, the z-score of x = 1, when x follows a normal distribution with a mean of 12 and a standard deviation of 3, is approximately -3.6667.

To know more about z-score, refer here:

https://brainly.com/question/31871890

#SPJ2

Use point-slope form to write the equation of a line that passes through the point (19,-17) with slop -5/3

Answers

Answer:

  y +17 = -5/3(x -19)

Step-by-step explanation:

The point-slope form of the equation for a line is ...

  y -k = m(x -h) . . . . . . . line with slope m through point (h, k)

You want a line with slope -5/3 through point (19, -17). Its equation is ...

  y -(-17) = -5/3(x -19) . . . . . substitute the given values

  y +17 = -5/3(x -19) . . . . . simplify

estimate the quotient 368/4​

Answers

Im pretty sure the quotient is 92

lim2 +lim3 +4+4
1111

Answers

Answer:

41,120

Step-by-step explanation:

Use the ALEKS calculator to write
13
24
as a decimal rounded to the nearest tenth.
Enter your search term

Answers

Answer:

0.13

0.24

Step-by-step explanation:

please mark as brainlist

Answer:

0.13

0.24

Step-by-step explanation:

What is the value of x? Midsegments of triangles

Answers

Hi how u doin ?

[tex] \frac{16}{x + 4} = \frac{1}{2} \\ [/tex]

inverse both sides

[tex] \frac{x + 4}{16} = \frac{2}{1} \\ [/tex]

Multiply both sides by 16

[tex]16 \times \frac{x + 4}{16} = 16 \times 2 \\ [/tex]

[tex]x + 4 = 32[/tex]

Subtract both sides 4

[tex]x + 4 - 4 = 32 - 4[/tex]

[tex]x = 28[/tex]

There u go..... Have a great day ❤

this is just and addition to the great posting below, just supplementing.

keeping in mind that the midsegment of a triangle is half the length of the parallel base/side, Check the picture below.

NO LINKS..... There are 39 people on a city bus. The ratio of adults to children is 10:3. At the next stop, 3 adults get off the bus. What is the new ratio of adults to children on the bus? A. 3:1 B. 9:2 C. 7:3 D. 12:1

Answers

Since the ratio is 10:3 we can find the total number of children and adults by finding how many times 13 (10+3) goes into 39. 39 / 13 = 3 so we can take the original 10:3 ratio and just scale it up to fit the whole group 10:3 * 3 -> 30:9:

From here it gets a little easier we know three adults of the 30 get off at the next stop bringing us to 27. So now our ratio is 27:9 we can simplify that down to 3:1 to get our final answer. Hope that helps!

What type of correlation does the data set display?
х
y
2
13
5 11
7 10
9
8
11
2
A. Negative
O B. No correlation
C. Positive

Answers

Answer:

B-NO CORRELATION.....

What is (- 2g-6)-(g-10)

Answers

Answer:

-3g + 4

Step-by-step explanation:

Answer:

Step-by-step explanation

(-2g-6)-\left(g-10\right)

(−2g−6)−(g−10)

In the Isoceles triangle, the legs
19x+10 and 5x+16. If the base is
he inches long, the perimeter of the
triangle is
inches

Answers

Check the picture below.

since we know that x = 3/7, we can then plug that on either of the twin legs, since it's an isosceles, and get the length of each leg, so say let's plug it in 5x + 16

[tex]5x + 16\implies 5\left( \cfrac{3}{7} \right)+16\implies \cfrac{38}{7}+16\implies \cfrac{38+112}{7}\implies \cfrac{150}{7}\\\\[-0.35em]\rule{34em}{0.25pt}\\\\\stackrel{\textit{both legs}}{\cfrac{150}{7}+\cfrac{150}{7}}+\stackrel{\textit{base}}{6}\implies \cfrac{150+150+42}{7}\implies \cfrac{342}{7}\implies 48\frac{6}{7}\impliedby \textit{perimeter}[/tex]

A ladybug crawls around the outside of a rectangle that measures 7.5 cm by 8.5 cm. The ladybug stays exactly 3.9 cm from the rectangle at all times to form a larger figure. What is the area of the new rectangle bound by the path of the bug?

Answers

Answer:

185.64 [tex]cm^{2}[/tex]

Step-by-step explanation:

Width =7.5+3.9*2 = 15.3 cm

Length = 8.5+3.9*2=16.3 cm

Big Area = 15.3*16.3 = 249.39 [tex]cm^{2}[/tex]

Small Area = 7.5*8.5 = 63.75 1 [tex]cm^{2}[/tex]

area bounded by the path of the bug = 249.39-63.75 = 185.64 [tex]cm^{2}[/tex]

Identify the kind of sample that is described
The student government association at a certain college chooses three classes, at random, being taught during a given semester
and samples all students in those classes to ask about a new grading policy.

Answers

Answer:

Cluster sampling

Step-by-step explanation:

Choosing groups and sampling whole group.

The labor cost for a certain dish is $40 per hour. If it takes 45 minutes to make the dish, what is the labor cost for this particular dish?

Answers

30 dollars …………………………….

Bradley is 27 years older than Madison seven years go, the sum of their ages was 59?

Answers

Answer:

how old is Madison right then I can't really help u solve it with that little info

Mr. Levy has a budget of $18,000. Uniforms for the marching band cost $315 each, and he needs 62 uniforms. He says, "Since 60x$300=$18,000, I can stay within the budget." Do you agree? Explain.​

Answers

Answer:

No. See explanation  below.

Step-by-step explanation:

No.

Since 60 × $300 = $18,000, he would be exactly at budget if he needed 60 uniforms and if each uniform cost $300, but he needs more than 60 uniforms, and each uniform costs more than $315, so the total cost is definitely more than $18,000.

No, Mr. Levy would not be staying within budget.

Sure, 60 · $300 is $18,00, but he didn't take in the other $15 or the 2 extra uniforms.

If he were to do the math correctly, he should have done 62 · $315, which would be $19,530.

If Mr. Levy were to buy all the uniforms and not worry about it because "60 · $300 is $18,000," he would go over the budget by $1,530.

Have a luvely day!

If a total of 1100 square centimeters of material is to be used to make a box with a square base and an open top, find the largest possible volume of such a box.

Answers

Answer:

Step-by-step explanation:

Let x = base side length

y = side height

volume V = x²y

y = V/x²

surface area

A = x² + 4xy

A = x² + 4x(V/x²)

A = x² + 4V/x

Solving for volume

V = (A - x²)(x/4)

V = ¼(Ax - x³)

a maximum will occur when the derivative equals zero

V' = ¼(A - 3x²)

0 = ¼(A - 3x²)

0 = A - 3x²

3x² = A

3x² = 1100

x² = (1100 / 3)

x = √(1100/3)

V = (A - x²)(x/4)

V = (1100 - √(1100/3))²(√(1100/3)/4)

V = 3,510.56606...

V = 3510.6 cm³

The box height will be half of the base side length.

y = ½√(1100/3)

A cylinder has a base radius of 7m and a height of 14m. What is its volume in cubic m, to the nearest tenths place?

Answers

Answer:Answer:

2155.1 m^3

Step-by-step explanation:

area= pi* r ^2 * h =pi * 7^2 *14 = 2155.1 m^3

First round 0.69 to the nearest tenth.

Answers

Answer:

0.69 rounded to the nearest tenth is 0.7

0.7 is the answer because you round the 69 round to 70.

Realtor Elaine Snyderman took a random sample of 12 homes in a prestigious suburb of
Chicago and found the average appraised market value to be $780,000, and the standard
deviation was $49,000. Test the hypothesis that for all homes in the area, the mean appraised
value is $825,000 against the alternative that it is less than $825,000. Use the 0.05 level of
significance

Answers

Using the t-distribution, it is found that since the p-value of the test is of 0.0044 < 0.05, it can be concluded that found the average appraised market value is less than $825,000.

The null hypothesis is:

[tex]H_0: \mu = 825000[/tex]

The alternative hypothesis is:

[tex]H_1: \mu < 825000[/tex]

We have the standard deviation for the sample, thus, the t-distribution is used. The test statistic is given by:

[tex]t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}[/tex]

The parameters are:

[tex]\overline{x}[/tex] is the sample mean.

[tex]\mu[/tex] is the value tested at the null hypothesis.

s is the standard deviation of the sample.

n is the sample size.

For this problem, the values of the parameters are: [tex]\overline{x} = 780000, \mu = 825000, s = 49000, n = 12[/tex].

The value of the test statistic is:

[tex]t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}[/tex]

[tex]t = \frac{780000 - 825000}{\frac{49000}{\sqrt{12}}}[/tex]

[tex]t = -3.18[/tex]

The p-value of the test is found using a left-tailed test, as we are testing if the mean is less than a value, with t = -3.18 and 12 - 1 = 11 df.

Using a t-distribution calculator, it is of 0.0044.

Since the p-value of the test is of 0.0044 < 0.05, it can be concluded that found the average appraised market value is less than $825,000.

A similar problem is given at https://brainly.com/question/25369247

Luisa buys a plane ticket that has an original price of $\$240$ . She uses a coupon code to get a $30\%$ discount off of the original price. She is then charged a $7\%$ tax on the discounted price.

What is the final cost for Luisa's plane ticket?

Answers

Answer:

c

Step-by-step explanation:

Answer:

179.76

Step-by-step explanation:

If there are 240 dollars then minus 30%240-30%=168.00Then, plus the 7% 168+7%= 179.76I hope this helps!

What is the slope of this graph?

A. - 1/4

B. -4

c. 4

D. 1/4​

Answers

Answer:

-4

Step-by-step explanation:

The slope of the graph is -4 because to get to the next point from another, you would have to go down 4 and right 1, -4/1 or just -4

Hope this helps.

Investing $10,000 in a savings account at 3% annual interest compounded monthly will result in approximately how much money after
10 years?
formula: A = P(1 + r/m)^mt

O $10, 564.68
O $13, 439.16
O $13, 493.54
O $13,000.00

Answers

Answer:

$13,493.54

Step-by-step explanation:

We are gonna use the provided formula: A = P(1 + r/m)^mt

A = Final amount (?)

P = Starting amount (10,000)

r = rate (0.03)

m = times applied (12 since it is compounded monthly)

t = years (10)

A = 10,000(1 + 0.03/12)^12·10

I would suggest using a calculator, but let's try to get a little far with this

A = 10,000(1 + 0.0025)^12·10

A = 10,000(1.0025)^120

A = 13,493.535471908333

Help me poeaseeeeeeeeeeee

Answers

Answer:

C. Hope It's Help :)))))

Answer:

4.5

Step-by-step explanation:

∛100 = ?

100 = 2 x 2 x 5 x 5

∛100

= ∛ ( 2 x 2 x 5 x 5 )

= 4.642

4.642 ~ 4.5

The approximation 4.642 can also be written as 4.5

Therefore,

∛100 = 4.5

can someone please explain

Answers

Answer:

y = x-7

Step-by-step explanation:

because its y = x + c

not y = kx

kx means k times x

so x PLUS c is not k TIMES x

Y=x-7
Step by step explanation:
Because it’s y=x+c
Not y=kx
Kx means x times k
So x plus c is not k times x

A bucket holds 4 liters of water. If a ladle can scoop out 1/4 of a liter, how many scoops will it take to empty the bucket?

Answers

Answer:

3 scoops will take to empty the bucket because 1 scoop has been taken out of the bucket

Answer:

The answer is 4 scoops.

Step-by-step explanation:

The question states that a ladle can scoop 1/4 of a liter at a time from the bucket, which is taking out a quarter of water from the bucket. Taking 2/4 liters of water from the bucket would be taking half of the water away. Taking another scoop of water out of it would be 3/4, and 4/4 would be taking all of the water out. Therefore, your answer is 4.

The current / in an electric circuit varies inversely with the resistance R. If a current of 60 amperes is produced by a resistance of 9 ohms, what current will be produced by a resistance of 6 ohms?


A resistance of 6 ohms will produce a current of
amperes

Answers

Answer:

Step-by-step explanation:

E = IR

E = 60(9)

E = 540 V

540 = I(6)

I = 540/6

I = 90 Amperes

thanks ill mark brainliest​

Answers

If I'm watching Gossip Girl, then it is Monday.

Hope this helps you!

Answer:

if i am watching Gossip   Girl then it is monday

Step-by-step explanation:

that is the common sense that everyone should know

hope this helps everyone and have a great summer!

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Memory containing hardwired instructions that the computer uses when it boots up, before the system loads. In PCs the instructions are read from a small program in the read only memory, called the Bios. options:RAMROMProcessingFlash drive 1/3(2x-3/7)+1/6x=4/7 Rewrite the sentence without using when 2 times and without changing meaning:I wonder when the day will come, when I will be able to say, what I got as privileges one day, now girls get asright. In which wing of the political party is the Citizen freedom party? Tennessee's Partner:a - is hanged.b - tries to bribe a judge.c - steals some gold from a miner.d - All of the choices are correct. 78 divided by 21?:-: Please help Please help A 15-volt power supply is used to power a circuit with two resistors in series. The voltage drop across R1 is 5 volts. What is the voltage drop across R2?5 volts20 volts10 volts0 voltsA 10-volt power supply is used to power a circuit, producing a current of 2 A. If total resistance of circuit is doubled, how will this affect the circuit?A. Voltage drop across each resistor will all double to match change in resistance B. The current will change so that the voltage drop for a complete loop through the circuit becomes 5 V.C. The current will change so that the voltage drop for a complete loop through the current remains at 10 V.D. The voltage drop across each resistor will be unaffected because each will remain at 0 V I. Choose the word which is pronounced differently from the other.1. A. teacher B. scholarship C. chair D. chess2. A. few B. dew C. new D. sew3. A. smart B. cart C. carry D. start4. A. burn B. bury C. curly D. turn5. A. about B. south C. count D. y ngII. Choose the word in each line has different stress pattern.6. A. bamboo B. blanket C. comment D. entrance7. A. collection B. hamburger C. pagoda D. encourage8. A. locate B. admire C. forest D. effect9. A. invent B. remain C. exchange D. gather10. 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Where and when was the tree planted?______________________________________________12. What has the tree got in recent years?______________________________________________13. What will happen to a man if he touches the tree?______________________________________________14. Why is the tree a useful source of income?______________________________________________15. Are the visitors afraid of what has been said about the t Help with this question which I attached a picture of the answer to the question attached. (i took a pic of it) Which of these is the note A? When a substance is heated ,the kinetic energy of its molecules DUE IN 15 MINUTES PLEASE HELPTony and Ricky spend a certain amount of money from their accounts each week at a pet shelter.The table shows the relationship between the amount of money (y) remaining in Tony's account and the number of weeks (x):Function 1:Number of Weeks(x) Amount Remaining (dollars)(y)1 302 243 184 12The equation shows the relationship between the amount of money, y, remaining in Ricky's account and the number of weeks, x:Function 2:y = 7x + 30Which statement states and explains which function shows a greater rate of change?Function 1, because Tony spends $6 each week and Ricky spends $7 each weekFunction 2, because Ricky spends $7 each week and Tony spends $6 each weekFunction 1, because Tony spends $18 each week and Ricky spends $23 each weekFunction 2, because Ricky spends $30 each week and Tony spends $18 each week eeg measures the synchronous electrical activity of the _____. Please help me pleaseeeeeeeee I don't understand this question can someone help me with this please, please explain!! and thank you for the help!! If u dont know try your best. Please do it quick, please do all :D Como se cambia la palabra cafe Read the story Lost in the Woods:I never thought departing the trail just a little would be a big deal. My parents had cautioned me so many times about wandering off and how easy it is to get disoriented. But, I wasn't planning to go very far. In fact, I kept looking back to make sure I could retrace my steps. Looking back didn't work. All of the trees began to look the same, and nothing looked familiar. It wasn't until I finally decided to make my way back that I realized I was lost! I had gone much farther, and for much longer, than I had planned.The warmth that the sun had brought to the forest in the daytime was now quickly disappearing. My parents' warnings came racing through my head. What did they tell me to do if ever I got lost? Over and over they drilled into me, "The most important thing to remember is S.T.O.P.!" It's an acronym for sit, think, observe, and plan. I stopped, sat down on the forest floor, and pulled my knees in close. It was cooling off, and a light drizzle was dampening the forest. I was lonely and scared. I knew that to survive, I had to stay warm, and I needed to drink water. Before I got any wetter, I made a very crude lean-to from the nearby branches and foliage. I managed to collect a bunch of dry leaves for a mattress. It was dark now. I took off my T-shirt and wrapped it around my legs, pulled on my hoodie, and curled up on the bed of leaves. I couldn't sleep. It was a cold, dark, and spooky night, and I was hungry.It felt like forever before the dawn filtered through the trees the next day. I knew I had to remain calm and make my whereabouts known. My family would be searching for me. I pulled out the only tool I had brought with me, my voice! I began to yell as loudly as I could,"Help! I'm over here!"Soon, very faintly at first, I could hear voices. I knew it was the search party, so I kept yelling and then listening. They kept calling out my name, and I kept replying until we were together. My dad was holding me close when he reprimanded me,"Don't you know you were late for supper? I'm disappointed that you wandered off. I'm glad you told us where you were going, and I'm proud of you for remembering the survival techniques. But, I bet you won't do that again, eh?""Nah, I think I learned my lesson," I answered sheepishly.Read the story The Rescue:Captain Henry was said to be one of the best divers in Bayfield, Wisconsin, and now he is said to be the best ship captain. However, this evening on Lake Superior was different from any other evening that Captain Henry had seen. It was a wavy and stormy night on the lake. Captain Henry was directing all of his strength to hold the steering wheel and control the ship. The waves were the size of mammoths, and the boat continued to fill with angry water. Captain Henry yelled at his fellow sailors to scoop out the water that was weighing down the ship, but the sailors could not work any faster. "We are sinking! We are sinking!" shouted the sailors.Captain Henry knew that they were in trouble. With little time to spare before the ship began to sink into Lake Superior, Captain Henry made an urgent call to his older brother. His older brother had helped him with everything from cuts to broken bones all of his life. He was a father figure to Captain Henry. Coincidently, his older brother was also the strongest, bravest, and most dedicated coastguard in Bayfield, Wisconsin. Luckily, with Lake Superior just north of Bayfield, Captain Henry's brother would hopefully be able to rescue them soon. Captain Henry began to desperately flash the emergency lights on the boat so that his brother could find him. In the distance, the sailors pointed to a boat coming their way and tooting its horn. As Captain Henry's brother arrived, he threw a rope to the sailors and pulled them to safety. Standing on the boat, wrapped in blankets, the sailors, Captain Henry, and his brother watched the ship sink. "All good things must come to an end," stated Captain Henry, sadly. "But, hey! Now, you can practice your diving again and go see your ship at the bottom of the lake," joked Captain Henry's brother.Both texts tell of a need to be rescued. In the story, Lost in the Woods, the child begins to yell loudly to alert the family on where to complete their rescue. Select an event from the other text, The Rescue that is similar. aCaptain Henry and his brother watched the ship sink. bCaptain Henry made an urgent call to his older brother. cCaptain Henry told the sailor to scoop the water out of the ship. dCaptain Henry yelled at the sailors that they were sinking. what are books of prime entry?