Which equation represents the pictorial model below?
Answers:
5 x 0.10 = 0.50
0.17 x 3 = 0.51
3 x 0.15 = 0.45
7 x 0.13 = 0.91
Answers
Answer:
3x0.15=0.45
Step-by-step explanation:
Related Questions
Some students recorded how many minutes they spent on the phone in one day. They put the results in a Stem-and-Leaf Plot.
What is the mean number of minutes spent on the phone?
Answers
Explanation:
The data from the stem-and-leaf plot is:
10,
24,25,26,
30,30,32,33,
40,45,46
Add up those values
10+24+25+26+30+30+32+33+40+45+46 = 341
Then divide over n = 11 which is the sample size.
341/11 = 31 is the arithmetic mean.
Answer:
341/11 = 31 is the arithmetic mean.
Step-by-step explanation:
Keira said that if 6 tickets are sold, there should be 2 tickets left. Is Keira correct?
Answers
According to Keira, if 6 tickets are sold, there should be 2 tickets left. However, we don't have any information about the initial number of tickets available.
If the total number of tickets initially was 8, and 6 tickets were sold, then there would indeed be 2 tickets left, supporting Keira's statement.
However, if the total number of tickets initially was less than 8, or if the statement doesn't specify the initial number of tickets, we cannot determine if Keira's statement is correct.
Therefore, without additional information, we cannot determine the accuracy of Keira's statement.
The stem-and-leaf plot displays data collected on the size of 15 classes at two different schools.
Mountain View School Seaside School
0 5, 8
9, 8, 2, 0 1 0, 1, 2, 5, 6, 8
8, 7, 6, 5, 5, 4, 4, 3, 1, 0 2 5, 5, 7, 7, 8
0 3 0, 6
Key: 2 | 1 | 0 means 12 for Mountain View and 10 for Seaside
Part A: Calculate the measures of center. Show all work. (2 points)
Part B: Calculate the measures of variability. Show all work. (1 point)
Part C: If you are interested in a smaller class size, which school is a better choice for you? Explain your reasoning. (1 point)
Answers
For Mountain View School:
Data: 0, 0, 0, 0, 1, 2, 3, 4, 4, 5, 5, 5, 5, 6, 7, 8, 8, 8, 9
Mean: (0 + 0 + 0 + 0 + 1 + 2 + 3 + 4 + 4 + 5 + 5 + 5 + 5 + 6 + 7 + 8 + 8 + 8 + 9) / 19
= 100 / 19
≈ 5.26
To find the median, we need to arrange the data in ascending order: 0, 0, 0, 0, 1, 2, 3, 4, 4, 5, 5, 5, 5, 6, 7, 8, 8, 8, 9.
The median is the middle value, which is the 10th value in this case.
Median: 5
For Seaside School:
Data: 0, 0, 0, 1, 1, 2, 2, 4, 5, 5, 5, 5, 6, 7, 7, 8, 8, 8, 9
Mean: (0 + 0 + 0 + 1 + 1 + 2 + 2 + 4 + 5 + 5 + 5 + 5 + 6 + 7 + 7 + 8 + 8 + 8 + 9) / 19
= 80 / 19
≈ 4.21
To find the median, we need to arrange the data in ascending order: 0, 0, 0, 1, 1, 2, 2, 4, 5, 5, 5, 5, 6, 7, 7, 8, 8, 8, 9.
The median is the middle value, which is the 10th value in this case.
Median: 5
Now let's calculate the measures of variability, specifically the range and interquartile range (IQR).
Range: The range is the difference between the largest and smallest values in the dataset.
For Mountain View School:
Range: 9 - 0 = 9
For Seaside School:
Range: 9 - 0 = 9
Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1) and measures the spread of the middle 50% of the data.
For Mountain View School:
Q1 = 3
Q3 = 7
IQR = Q3 - Q1 = 7 - 3 = 4
For Seaside School:
Q1 = 2
Q3 = 7
IQR = Q3 - Q1 = 7 - 2 = 5
To determine which school is a better choice for a smaller class size, we can consider both the mean and the median.
Both the mean and median for Mountain View School are higher than those for Seaside School. This suggests that, on average, the class sizes at Mountain View School are larger than those at Seaside School. Therefore, if you are interested in a smaller class size, Seaside School would be a better choice
For Mountain View School:
- Median: The median class size is the middle value, which is 25.
- Mean: The mean class size is the sum of all the class sizes divided by the total number of classes, which is (29 + 28 + 28 + 27 + 25 + 24 + 24 + 23 + 21 + 20 + 19 + 18 + 15 + 13 + 10) / 15 = 21.27.
For Seaside School:
- Median: The median class size is the middle value, which is 20.
- Mean: The mean class size is the sum of all the class sizes divided by the total number of classes, which is (25 + 25 + 27 + 27 + 28 + 28 + 28 + 30 + 31 + 35 + 36 + 38 + 40 + 43 + 45) / 15 = 31.13.
Part B:
For Mountain View School:
- Range: The range is the difference between the largest and smallest values, which is 29 - 10 = 19.
- Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1). From the stem-and-leaf plot, we can see that Q1 is 20 and Q3 is 28. Therefore, the IQR is 28 - 20 = 8.
For Seaside School:
- Range: The range is the difference between the largest and smallest values, which is 45 - 25 = 20.
- Interquartile Range (IQR): The IQR is the difference between the third quartile (Q3) and the first quartile (Q1). From the stem-and-leaf plot, we can see that Q1 is 27 and Q3 is 38. Therefore, the IQR is 38 - 27 = 11.
Part C:
If you are interested in a smaller class size, Mountain View School is a better choice for you because it has a lower mean and median class size than Seaside School.
Q- Write the nth term, generalized statement, and the 100th term of the given number sequence. (Need answer urgent!!....... WILL MARK AS BRAINLIEST!!)
1) 1,2,3......
2) 2,4,6.....
3) 3,5,7......
4) 1,4,7,10
5) -1,-2,-3
Answers
Answer:
1) n
2) 2n
3) 2n+1
4) 3n-2
5) -n
Step-by-step explanation:
To write a generalized statement for a pattern using n, we multiply n by the common difference between each term. We add the term number before the first term to this.
1) 1, 2, 3...
For the first question, the common difference is 1 because each term increases by 1. Multiply n by 1.
1n
To find the term number before the first term, we subtract 1 from the first term.
1-1=0
Therefore, our general statement is 1n+0, or just n.
2) 2, 4, 6...
The common difference is 2 because we add 2 each time. Multiply n by 2.
2n
The term number before the first term is equal to the first term - the common difference.
2-2=0
Therefore, our general statement is 2n+0, or just 2n.
3) 3, 5, 7...
The common difference is 2 because we add 2 each time. Multiply n by 2.
2n
The term number before the first term is equal to the first term - the common difference.
3-2=1
Therefore, our general statement is 2n+1.
4) 1, 4, 7, 10...
The common difference is 3 because we add 3 each time. Multiply n by 3.
3n
The term number before the first term is equal to the first term - the common difference.
1-3=-2
Therefore, our general statement is 3n+(-2), or 3n-2.
5) -1, -2, -3...
The common difference is -1 because we subtract 1 each time. Multiply n by -1.
-1n
The term number before the first term is equal to the first term - the common difference.
-1-(-1)
= -1+1 (because two negatives make a positive)
= 0
Therefore, our general statement is -1n+0, or just -n.
I hope this helps!
Hope this helps!!
Select ALL the correct answers.
Brandon goes to an ATM near his house and withdraws x dollars from his checking account. Since the ATM is not at the same bank where his checking account is, the bank charges a $2 fee for each transaction, which is withdrawn from his account in addition to the x dollars.
Brandon makes this same withdrawal at this same bank once a week for seven weeks. Which of the following expressions could represent the total amount withdrawn from Brandon's checking account during this time period from these ATM transactions?
(7)(x) + (7)(2)
7x + 9
7x + 14
7x + 2
(7)(x) + (7)(2x)
7(x + 2)
Answers
Answer:
(7)(x) + (7)(2) , 7x + 14 , 7(x + 2)
Step-by-step explanation:
help I have 2 mins wmnibfie
Answers
5/6(−4/12)(−2/15)
A simple math problem, but im terrible at math and need a refresher. HeLpP
Answers
Answer:13
Step-by-step explanation:
-4/12 = -0.33
-2/15 = -0.133
This gives you (-0.33)(-0.133)
Next, multiply both brackets together.
(-0.33)(-0.133) = appx. 0.044
Now that you have the product of the two brackets, calculate 5/6
5/6 = 0.833
Finally, sum it all up. Since the last two numbers are negative, we subtract them.
0.833 - 0.33 - 0.133 =
Therefore, the answer is 0.37
A car can be assembled on an assembly line in 6 hours. Assume that the cars are assembled at a constant rate.
. a. How many cars, y, can be assembled in t hours?
b. How many cars can be assembled in a week?
Answers
Answer:
a. \(y = \frac{t}{6}\)
b. y = 28
Step-by-step explanation:
\(y = \frac{t}{6}\)
1 day = 24 hours
1 week = 7 days
In 24 hours:
\(y = \frac{24}{6}\)
y = 4
4 cars/day
In 1 week
\(y =(7)(\frac{24}{6})=7*4\)
y = 28
Kristi had $3,250 in her bank account. Currently, she has $2,730 in her account. What is the approximate percent of decrease in her account?
i will give brainliest :)
Answers
Which of the following is an outlier in the set of data below?
2, 12, 12, 14, 17, 18, 19
19
2
14
12
Answers
Answer:
B/ 2
Step-by-step explanation:
Answers: B/2
Step by step:
4x + 23x - 54x + 7
What is the answer?
Answers
Answer:
−27+7
Step-by-step explanation: First add 23x + 4x=27x
Then subtract 54x gives you -27x
You can't add a regular number with x's so your final answer is -27x+7
Answer:
−27x+7
Step-by-step explanation:
i need help with this question please help me
Answers
Answer:
The answer is D.
Step-by-step explanation:
y = mx + b
C = 5/9 (F - 32)
C = 5/9F - 5/9 (32)
Option (D) is correct.
Please help, I’ve been stuck on this forever. Much appreciated!
Jane and Jillian are relay partners in a swim meet. Their average time is 37.8 seconds. Jane swims her lap in 34.65 seconds. The equation 1/2(x + 34.65) = 37.8 can be used to find Jillian's time. Drag the process to each step to solve the equation to find Jillian’s time.
Answers
Answer: ans 72.45
Step-by-step explanation:
Answer:
Step-by-step explanation:
please help if you can, thank you ;)
(file below)
Answers
Answer: B
Step-by-step explanation:
The triangle has 3 sides and the pentagon has 5 sides so we can automatically removed those. The bottom of the pyramid is a square and if you look at it the red shape doesn't make (or at least look like) a square which leaves the last option the rectangle.
If you look at the the pyramid from the bottom angle- it looks like a square. But with the red shape through it, it no longer is a square, but a rectangle.
A chemical plant takes 6 1/3 million gallons of water from a local river and puts
2 7/12 million gallons back into the river. How much water does not go back into the river?
SHOW WORK or i'll just take your answer off so someone else can answer -3-
Answers
Identify the constant of proportionality from the graph. 11 10 9 8 7 6 5 3 2 1 1 2 3 4 5 6 7 8 9 10 11 O A. B. 1 C. 5 D. 4
Answers
An artist’s canvas has sides measuring 3x – 3 and 4x + 1 inches.
What is the area of the canvas? Show all work.
The artist laid the canvas flat on the floor and poured some paint in the center. The paint flows at a rate of r(t) = 4t where t represents time in minutes and r represents how far the paint is spreading on the canvas. The area of the paint can be expressed as A[r(t)]= πr². What is the area of the circle created by the paint?
If the artist wants the circle to be at least 1300 in², will it be that large in 5 minutes? Support your answer with your work.
Answers
Step-by-step explanation:
Finding the area of the canvas:
The canvas has sides measuring 3x - 3 and 4x + 1 inches. To find the area, we multiply the lengths of the sides. So, the area of the canvas is given by:
Area = (3x - 3) * (4x + 1)
= 12x^2 + x - 3
Therefore, the correct equation for the area of the canvas is A = 12x^2 + x - 3.
Finding the area of the circle created by the paint:
The rate at which the paint is spreading on the canvas is given by the function r(t) = 4t, where t represents time in minutes and r represents how far the paint has spread. The area of the circle created by the paint can be expressed as A[r(t)] = πr^2, where r(t) is the distance the paint has spread at time t.
Substituting the value of r(t) = 4t into the formula, we get:
A[r(t)] = π(4t)^2
= 16πt^2
Therefore, the area of the circle created by the paint is 16πt^2.
Determining if the circle will be at least 1300 in² in 5 minutes:
To check if the area of the circle will be at least 1300 in² in 5 minutes, we substitute t = 5 into the equation for the area:
A[r(5)] = 16π(5)^2
= 400π
Approximating the value of 400π, we get approximately, 1256.64.
Since 1256.64 is less than 1300, we can conclude that the area of the circle created by the paint after 5 minutes will not be at least 1300 in².
A = (3x - 3)(4x + 1)
A = 12x² - 8x - 3
The paint is spreading at a rate of r(t) = 4t, which means that the radius of the circle is also increasing at a rate of 4t. Therefore, the area of the circle can be expressed as:
A[r(t)] = πr²
A[r(t)] = π(4t)²
A[r(t)] = 16πt²
We want to find out if the area of the circle will be at least 1300 in² in 5 minutes. So we need to substitute t = 5 into the equation for the area of the circle:
A[r(5)] = 16π(5)²
A[r(5)] = 400π
The area of the circle created by the paint after 5 minutes is 400π in², which is approximately 1256.64 in². Since this is less than 1300 in², the circle will not be that large in 5 minutes.
WELP WILL MARK BRAINLEST Part B: Shakira claimed that the expression -k + 2 + k is positive for any value of k. Determine whether Shakira's statement is always true, sometimes true, or never true. Provide evidence to support your conclusion (10 points)
Answers
Answer:
it is always true
Step-by-step explanation:
-++
+++
--+
Answer:
its always true
Step-by-step explanation:
its always true because if both -k and k were the same number then it would go like this. so lets say k = 7 so that means the equation would be
-7 plus 2 plus 7 so lets add the 7 to the -7 that make 0 and if you add 2 two 0 0 the answer is now 2 that will be the same for any other number as well.
Please answer this thank you :>
Answers
Answer:
-0.291
Step-by-step explanation:
5/12- 1/8= 0.29166666666
So we cut it off at -0.291
Answer: negative 7/24 not sure how to explain in word form so i attached an image of the answer, hope it helps
I have 60% on my iPad and my brother has 90% on his how much more percentage I need as a fraction.
Answers
Answer:
1/3
Step-by-step explanation:
just convert it?
3/10
Step-by-step explanation:
60% is the same as 60/100
90% is the same as 90/100
90-60=30
30/100
30/100 is divided by 10 on each side to simplify it to 3/10
im on ixl rn what is mean median mode and range
Answers
PLEASE HURRY!!!!! WORTH 25 POINTS!
Find the product.
(6 a + b ) ²
Answers
Answer: 12a + 2b im pretty sure
Step-by-step explanation:
Banana Cupcakes
makes 10 cupcakes
1 cup granulated sugar
cup vegetable oil
1 large egg
4 tablespoons sour cream
2 medium-sized ripe bananas, mashed
1 cups all-purpose flour
1 teaspoon baking soda
teaspoon salt
1 teaspoon vanilla extract
pinch of nutmeg
You will use the recipe above to answer the following questions:
This recipe serves 10, but you need to serve 30. What number will you need to multiply the amount of each ingredient by to adjust the recipe? How did you determine this number?
How much vegetable oil do you need for 30 cupcakes?
How much flour do you need for 30 cupcakes?
What is the difference in the amount of vanilla extract you would need for 30 cupcakes?
What is the difference in the amount of salt you would need for 30 cupcakes?
In the real world, even though you make adjustments to a recipe to accommodate the number of people you need to serve, you sometimes round the amount of an ingredient instead of using an exact amount. Which ingredient would it make more sense to round rather than coming up with the exact amount? Why?
Answers
Answer: Hey give me 1 hour and ill answer it I'm doing odessyware rn so Ill get back to you later appreciate yo patients.
Step-by-step explanation:
Then, if we want to make 30 servings, we need to use that recipe 3 times. (because x*10 = 30, then x = 30/10 = 3)
This would be equivalent to multiply each ingredient by 3.
for 30 cupcakes we need:
3 cups of vegetable oil.
3 cups of all-purpose flour
(because for each one of these ingredients we needed only 1 cup to make 10 cupcakes).
for 10 cupcakes we need 1 teaspoon of vanilla.
for 30 cupcakes we need 3 teaspoons of vanilla, the difference is 3 - 1 = 2.
So the difference is 2 teaspoons.
About which quantities we should round are those where we may have mixed numbers or big numbers.
For example, we have 4 tablespoons of sour cream for 10 servings, then for 30 servings we should have:
3*4 = 12 tablespoons.
We could round this down to 10 tablespoons.
Hope this helped
I almost broke my brain doing this so can you give me brainliest answer please thank you
What is the 20th term of the sequence 2n-5? I need help.
Answers
Answer: 35
Step-by-step explanation: substitute 20 into n,
2(20)-5
40-5
35
To the nearest square meter, what is the curved surface area of the half pipe if it’s 7 m long?
The radius is 2.5 m
Answers
Answer: 55 m²
Step-by-step explanation:
The arc length of a half-circle is πr, so the area of the curved surface is A = πrl = π(2.5 m)(7 m) = 17.5π m² ≈ 55 m²
Find the missing number so that the equation has infinitely many solutions. – 5x–19= (Blank)x–19
Answers
Answer:(number)=-5
Step-by-step explanation:
You can use simple logic in order to solve this equation.
An equation that has infinitely many solutions will have the same exact numbers on both sides
Example: 3x = 3x, it has infinite solutions because no matter what number you put, the equation will always be true
The solution for this equation is -5 because when -5x-19=-5x-19, no matter what number you put as a solution, it will be true.
Answer:
Step-by-step explanation:
and 90% of people marry there 7th grade love. since u have read this, u will be told good news 2night. if u don't pass this on nine comments ur worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of ur life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love u
Which graph could represent the following story? Trent walked from the cafeteria to his math class. After class, he walked back to the cafeteria and stopped to get a beverage from a vending machine on the way.
A) Image 1 (1st Image)
B) Image 2 (2nd Image)
C) Image 3 (3rd Image)
D) Image 4 (4th Image)
Answers
Answer:
D) Image 4 (4th Image)
Step-by-step explanation:
The maths class is away from the cafeteria so the line inclines upwards. The line then stays flat indicating the time spent in the same spot at his maths class. Then he starts heading back to the cafeteria and the line inclines downward. He then stops along the way for a drink which indicates the second flat line where he spent time in the same spot. Finally, the line inclines all the way down towards the bottom showing that he is back at the cafeteria.
.
Maria built a tool that checks the rate of flow of liquid from one container to another. The tool consists of a cylindrical container attached to a cubic container. The cylinder has a diameter of 5 centimeters and a height of 6 centimeters, and the cube has a side length of 5 centimeters, as shown in the diagram below.
What is the volume of the two containers that make up Maria’s tool?
690.2 cubic centimeters
596 cubic centimeters
266.3 cubic centimeters
242.75 cubic centimeters
Answers
(Science/math) please answer fast. read the problem below. please don't report if i got subject wrong
Scientists write very large and very small numbers using scientific notation. A gram of carbon has about 50,000,000,000,000,000,000 atoms. Express this in scientific notation.
a. Move the decimal until one nonzero digit remains on the left: 5.0000000000000000000
b. Count how the places you moved. In this case, 19 places left.
c. Show that number as a power of 10. The exponent is negative if the decimal moves right and positive if it moves left. Answer: 5 × 10 19
d. Reverse the process to change scientific notation back to a whole number.
Answers
Answer:
i think it is D
Step-by-step explanation
Hope that helps!
Answer:
d
Step-by-step explanation:
Graph the following in cartesian plane. With solution.
1.) 5x - 4y = 20
2.) 3x + 3y = 15
3.) y = 3/4x - 2
4.) y = -3/2x + 3
pls help me I need this pls, I only need the solution, thx
Answers
Step-by-step explanation:
1.) 5x-4y=20
y=5/4x-5
5x/4-5=0
x=4
2.) 3x+3y=15
y=-x+5
x+5=0
-x=-5
=x=5
3.) y=3/4x-2
3/4x-2=0
x=0
3x4x/4 -2 x4x-0x4x
3-2x4x=0x4x
3-8x=0
8x=-3
=x=3/8
4.) y=3/2x+3
3/2x+3=0
x=0x
3x2x/2+3x2x=0x2x
3+3x2x=0x2x
3+6x=0
6x=-3
x=_3/6
=x=-1/2