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Which expression represents the algebraic phrase “nine times a number plus thirteen”? A. 9 – y + 13 B. 9 + y – 13 C. 9y + 13 D. 13y + 9


Answer:  The correct option is (C) 9y + 13.

Step-by-step explanation:  We are given to select the expression that represents the following statement :

“nine times a number plus thirteen”

Let the number be represented by y.

Then, nine times the number is written as follows :

9times y=9y.

Since we are to add 13, so the final expression is given by

E=9y+13.

Thus, the required expression is 9y+13.

Option (C) is CORRECT.

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The weight, w, of a spring in pounds is given by 0.9 times the square root of the energy, E, stored by the spring in joules. If the energy stored by the spring is 12 joules, what is the approximate weight of the spring in pounds?


Answered by answersmine AT 22/10/2019 – 02:34 AM

The is the concept of algebra, the weight of the spring can be modeled by the equation;
w=0.9sqrt E
where;
=energy in joules;
thus the weight of the spring when the energy is 12 j will be:
w=0.9sqrt12
w=3.18 g

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“when you build defenses, you are minimizing the risk of encountering future problems. Through this strategies, you learn how to cope with the changing times and how to turn each challenge into something beneficial” 1. my journey through this lesson enabled me to learn… 2. it made me realize that… 3. I, therefore, commit to…


Answered by answersmine AT 22/10/2019 – 02:35 AM

As far as I understand, you have to write possible conclusions and show how motivated you become after reading this excerpt. You can write something like this  : 1)  My journey through this lesson enabled me to learn that I am capable of making and doing new things, the things which I have never experienced before. I also can see that my potential is quite enough to bring all the learned things in the future. And even though life can prepare a tough situations, I can accept this challenge and make a profit out of life obstacles because my knowledge is my weapon.
2) It made me realize that every person must take life challenges seriously. People also have to recognize these challenges in order to be prepared for the unexpected future. So now I understand that I should never give up and always keep in mind that there are always many solutions and the only thing that people need — is a little time to find them.
3) I, therefore, commit to be strong and faithful to myself and towards other people. Accepting personal challenges help one to be a good person, so I am ready to assume such a responsibility. With this realisation I can inspire myself for new steps towards the future. It will make me feel confident wherever I am and thus can lead me to a personal success.

Post your answer

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Tina can paint a room 1.5 times faster than Joey can. If they work together, they can paint a room in 6 hours. How long would it take the slower person working alone to paint the room?


To answer this problem, let us define that:

x = amount of time Joey can paint a room in hours

1.5 x = amount of time Tina can paint a room in hours

Each person can complete 1 job in the specified amount of
time.

1 job / x hours = rate of Joey

1job / 1.5 x hours = rate of Tina

By adding the two, they can paint the room (1 job) in 6
hours. Therefore:

(1 / x) + (1 / 1.5 x) = 1 / 6

Multiplying whole equation with 6 (x) (1.5 x):

6 (1.5 x) + 6 x = x (1.5 x)

9 x + 6 x = 1.5 x^2

Dividing both sides with x:

15 = 1.5 x

x = 10 hours

Therefore the time it will take Tina, the slower person, is
1.5x = 15 hours

ANSWER: 15 hours

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The data set shown below represents the number of times some families went out for dinner the previous week. 4, 2, 2, 0, 1, 6, 3, 2, 5, 1, 2, 4, 0, 1 Create a dot plot to represent the data. What can you conclude about the dot plot of the data set? Check all that apply. The range of the number line should be 0 to 7 to represent the frequency. Four families said they ate out twice the previous week. One family said they ate out 5 times the previous week. The data set is symmetrical. The median best represents the data set.


Answer:

The correct options are:

  • Four families said they ate out twice the previous week.
  • One family said they ate out 5 times the previous week.
  • The median best represents the data set.

Step-by-step explanation:

We are given a data set as:

4, 2, 2, 0, 1, 6, 3, 2, 5, 1, 2, 4, 0, 1

On arranging this data set in the frequency table we get:

Number of times they went for dinner    Number of families  

           0                                                          2

           1                                                           3

           2                                                          4

           3                                                           1

           4                                                           2

           5                                                           1

           6                                                            1

  • Hence, the range of the number line is between 0 to 6.
  • Also there are 4 dots above 2.

    Hence,  Four families said they ate out twice the previous week.

  • Also there is one dot above 5.

        Hence,  One family said they ate out 5 times the previous week.

  • The data set is not symmetrical since the median is 2 and the data points to the left and to the right do not have symmetry.

Hence, the data set is not symmetrical.

  • Also we know that the median of the data is the central tendency of the data and always best represents the data.

Hence, The median best represents the data set.

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“When you build defenses, minimizing the risk of encountering future problems. Through this strategies, you learn how to cope with the changing times and how to turn each challenge into something beneficial.”My journey through this lesson is enabled me to learn__________________________________________________It made me realize that ___________________________I, therefore, commit to_______________________


My journey through this lesson allowed me to
learn that the most significant component of defense is responsiveness. It is
important for us to be aware for it serves as one of the best defenses we had.

It made me understand that
putting defenses lessens the risk of encountering future problems. Also, it
made me realize that putting defenses helps me toughen myself in the middle of
discrimination. 


I, therefore, commit to much
strengthen myself and as well as my defenses for it really helps me. 

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Karla has spent $33 on food . She bought milk , cheese , and meat. The milk cost half as much as the cheese and the meat cost four times as much as the cheese. Which equation would help you find the cost of the cheese? c+.5c+4c=33 , c +2c+4c=33 , c(.5c+4c)=33 , c + 4c/5c=33 Let C equal the amount spent on cheese



Karla has spent $33 on food . She bought milk , cheese , and meat. The milk cost half as much as the cheese and the meat cost four times as much as the cheese. Which equation would help you find the cost of the cheese? c+.5c+4c=33 , c +2c+4c=33 , c(.5c+4c)=33 , c + 4c/5c=33 Let C equal the amount spent on cheese

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The area of circle b is 25 times greater than the area of circle a. The radius of circle a is 3. What is the radius of circle a of circle b



The area of circle b is 25 times greater than the area of circle a. The radius of circle a is 3. What is the radius of circle a of circle b

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Karla has spent $33 on food . She bought milk , cheese , and meat. The milk cost half as much as the cheese and the meat cost four times as much as the cheese. Which equation would help you find the cost of the cheese? c+.5c+4c=33 , c +2c+4c=33 , c(.5c+4c)=33 , c + 4c/5c=33 Let C equal the amount spent on cheese



Karla has spent $33 on food . She bought milk , cheese , and meat. The milk cost half as much as the cheese and the meat cost four times as much as the cheese. Which equation would help you find the cost of the cheese? c+.5c+4c=33 , c +2c+4c=33 , c(.5c+4c)=33 , c + 4c/5c=33 Let C equal the amount spent on cheese

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Sam is measuring the velocity of a car at different times. After two hours, the velocity of the car was 50km/h. After six hours, the velocity of the car is 54km/h. Part A: Write an equation in two variables in standard form that can be used to describe the velocity of the car at different times. Show your work and define the variables used. (5points) Part B: How can you graph the obtained in Part A for the first seven hours? (5points)


Answered by answersmine AT 22/10/2019 – 02:54 AM

You are given the time and speed so from there you can get the points (2,50) and (6,54) once you got that you can see how the slope is 1 and 
b=48
x-y=-48 (standard form)
 
part B= 
1    49
2    50
3    51
4    52
5    53
6    54
7    55

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N a beanbag toss game, Janelle scores 5 points for landing on a round target and 8 points for landing on a square target. She needs more than 50 points to win. Let x represent the number of times Janelle lands on the round target and let y represent the number of times she lands on the square target. Which inequality represents the situation?



N a beanbag toss game, Janelle scores 5 points for landing on a round target and 8 points for landing on a square target. She needs more than 50 points to win. Let x represent the number of times Janelle lands on the round target and let y represent the number of times she lands on the square target. Which inequality represents the situation?

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In this passage, Sue Macy quotes Ellen B. Parkhurst. What is Parkhurst’s viewpoint on the topic? Biking is a social activity for girls. Biking is a healthy activity for girls. Biking is an immoral activity for girls. Biking is a dangerous activity for girls. Ellen B. Parkhurst, wife of another New York minister, celebrated the advantages of bicycle riding in Washington's Evening Times. "Of course I do not believe that bicycling is immoral," she said. "A girl who rides a wheel is lifted out of herself and her surroundings. She is made to breathe purer air, see fresher and more beautiful scenes, and get an amount of exercise she would not otherwise get. All this is highly beneficial." —Wheels of Change, Sue Macy



In this passage, Sue Macy quotes Ellen B. Parkhurst. What is Parkhurst’s viewpoint on the topic? Biking is a social activity for girls. Biking is a healthy activity for girls. Biking is an immoral activity for girls. Biking is a dangerous activity for girls. Ellen B. Parkhurst, wife of another New York minister, celebrated the advantages of bicycle riding in Washington’s Evening Times. “Of course I do not believe that bicycling is immoral,” she said. “A girl who rides a wheel is lifted out of herself and her surroundings. She is made to breathe purer air, see fresher and more beautiful scenes, and get an amount of exercise she would not otherwise get. All this is highly beneficial.” —Wheels of Change, Sue Macy

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Charles washes his hands every time he passes either the bathroom or the kitchen sink. Before he goes to bed at night, he checks several times to make sure that the stove is turned off. According to this information, Charles is probably suffering from A. OCD. B. GAD. C. dissociative fugue. D. acute stress disorder.


In reality this is way too little information to go on, and it would be irresponsible to make any assumptions about an individual based on what was provided here alone, but for the sake of merely answering a High School Bio question:

the answer is  A.  OCD.

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Explain how to translate the phrase into an algebraic expression. four times the difference of eight and a number



Explain how to translate the phrase into an algebraic expression. four times the difference of eight and a number

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Greg made pudding every weekend. The more times he made pudding, the more practice he gained. The time he took to make the same amount of pudding every week decreased with practice. The function below shows the number of hours f(x) Greg took to make pudding after he had made it x times: f(x) = 2(0.8)x Which graph best represents the function? graph of function f of x equals 0.8 multiplied by 2 to the power of x graph of function f of x equals 0.8 to the power of x graph of function f of x equals 2 to the power of x function of f of x equal 2 multiplied by 0.8 to the power of x


After Greg makes the pudding 1 time, it takes him f(1)=2(0.8) ^{1}=1.6 hours to make it.

After Greg makes the pudding 2 times, it takes him f(2)=2(0.8) ^{2}=1.28 hours to make it

After Greg makes the pudding 2 times, it takes him f(3)=2(0.8) ^{3}=1.024 hours to make it

so The function is f(x)=2(0.8) ^{x}

Answer: f of x equals 2 multiplied by 0.8 to the power of x

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Ivan earns 8 each time he walk his neighbors dog he already walked the dog 5 times how many more times does he need to walk the dog to earn enough money to buy a game that cost 88



Ivan earns 8 each time he walk his neighbors dog he already walked the dog 5 times how many more times does he need to walk the dog to earn enough money to buy a game that cost 88

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Which of the following is equal to 4 and 1 over 3 divided by 2 and 3 over 5? 13 over 3 times 5 over 13 13 over 3 times 13 over 5 41 over 3 times 5 over 23 4 and 1 over 3 times 2 and 5 over 3



Which of the following is equal to 4 and 1 over 3 divided by 2 and 3 over 5? 13 over 3 times 5 over 13 13 over 3 times 13 over 5 41 over 3 times 5 over 23 4 and 1 over 3 times 2 and 5 over 3

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Use positive rational exponents to rewrite the following expression: the square root of x times the 5th root of x



Use positive rational exponents to rewrite the following expression: the square root of x times the 5th root of x

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The half-life of helium-5 is 7.6 x 10^-22 seconds, and the half-life of helium-9 is 7 x 10^-21 seconds. Approximately how many times greater is the half-life of helium-9 than that of helium-5?


(7X10^-21)/(7.6X10^-22)  is equal to:

(7/7.6)(10^-21/10^-22)

Rule for division of similar bases with exponents…

(a^b)/(a^c)=a^(b-c)

In this case we have (10^-21)/(10^-22)=10^(-21–22)=10^1

And 7/7.6≈0.921, and we only had two significant figures so 0.92 works

0.92X10^1

9.2

So the half life of helium-9 is about 9.2 times greater than the half life of helium-5

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Pedro has twice as many carrots as Martha, who has the same number of carrots as Oliver. If Pedro gives 5 carrots to Oliver, then Martha has 3 times as many carrots as Pedro. How many carrots does Martha have? a) 10 b) 6 c) 3 d) 2 K) 1


“Pedro has twice as many carrots as Martha:”
p = 2m

“If Pedro gives 5 carrots to Oliver,” 
p – 5  (
Oliver is irrelevant.)

“then Martha has 3 times as many carrots as Pedro”


m = 3(p – 5)

We know p in terms of m, so substitute it in:
m = 3(2m – 5)

Distribute the 3:
m = 6m – 15

Subtract 6m from both sides:
m-6m=-15
Combine variable terms:

-5m=-15

Divide out -5

m = -15/-5

m = 3

The answer is c) 3  

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How many times greater is the underlined digit 7 at the left compared to the underlined digit 7 at the right 905763473



How many times greater is the underlined digit 7 at the left compared to the underlined digit 7 at the right 905763473

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Each of the following correctly match an English phrase with a mathematical expression except _____. a) a number times seven, 7x b) a number subtracted from seven, 7 – x c) the sum of a number and seven, 7 + x d) a number divided by 7, 7/x



Each of the following correctly match an English phrase with a mathematical expression except _____. a) a number times seven, 7x b) a number subtracted from seven, 7 – x c) the sum of a number and seven, 7 + x d) a number divided by 7, 7/x

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Solve for r: C = 2pi(r). r = C over 2 pi r = 2 c all over pi r = C over pi r = pi times C all over 2 A)r = C over 2 pi B)r = 2 c all over pi C)r = C over pi D)r = pi times C all over 2



Solve for r: C = 2pi(r). r = C over 2 pi r = 2 c all over pi r = C over pi r = pi times C all over 2 A)r = C over 2 pi B)r = 2 c all over pi C)r = C over pi D)r = pi times C all over 2

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Height of window 0.6 feet less than 2.5 times it width height of window 4.9 feet


Suggest you use some punctuation here:  “The height of window is 0.6 feet less than 2.5 times it width.  The height of window  is 4.9 feet.  Find the width of the window.”

height of window = 4.9 feet = 2.5(width) – 0.6 feet.

simplify this equation by adding 0.6 feet to both sides of the equation:

4.9 feet + 0.6 feet = 2.5 (width); find width:

5.5 feet = 2.5 (width)

Dividing both sides of this equation by 2.5 will result in an equation for the width of the window, in feet.

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Nine times the input minus seven is equal to the output. Which of the following equations describes this function? A) 9y – 7 = x B) 7y – 9 = x C) 9x – 7 = y D) 7x – 9 = y



Nine times the input minus seven is equal to the output. Which of the following equations describes this function? A) 9y – 7 = x B) 7y – 9 = x C) 9x – 7 = y D) 7x – 9 = y