Which answer choice represents an equivalent number sentence of "49 - 12"?
A. 37
B. 49 + (-12)
C. 49 + 12
D. 12 - 49
Answers
Answer:
B
Step-by-step explanation:
A. 37 isn't a number sentence
B. 49 + (-12) = 49-12. They're the same thing because 49 minus 12 can also be written as 49 plus negative 12
C. 49 + 12 doesn't equal 49-12
D. 12- 49 = -37 which isn't equivalent to 49-12.
Hope this helps!!!
Related Questions
1. What is the distance between the points (4,-7) and (-5,-7)?
A. 1 unit B. 3 units C. 7 units D. 9 units.
2. Fill in the blanks. Write the coordinates of two points that are the given distance from these points and horizontal/vertical:
2. 5 units from (-1,-2) ( ,-2 and ( ,-2)
3. 8 units from (2,4) (2, ) and (2, )
4. 3 units from (-7,-5) (-7, ) and (-7, )
5. 6 units from (4,-1) (4, ) and (4, )
6. 10 units from (-1,9) ( ,9) and ( ,9)
7. 7 units from (-3,2) ( ,2) and ( ,2)
Answers
Answer:D. 9 units 2. (-6,-
Step-by-step explanation:What is the distance between the points (4,-7) and (-5,-7)? A. 1 unit B. 3 units C. 7 units D. 9 units. 2. Fill in the blanks. Write the coordinates of two points that are the given distance from these points and horizontal/vertical: 2. 5 units from (-1,-2) ( ,-2 and ( ,-2) 3. 8 units from (2,4) (2, ) and (2, ) 4. 3 units from (-7,-5) (-7, ) and (-7, ) 5. 6 units from (4,-1) (4, ) and (4, ) 6. 10 units from (-1,9) ( ,9) and ( ,9) 7. 7 units from (-3,2) ( ,2) and ( ,2)
Answer:
1. D
Step-by-step explanation:
You can add the X coordinates together and you will get the length (sorry I can't answer the others ones I don't have enough time rn)
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.
the choices are 603 and two-thirds 658 and two-thirds 743 768
Answers
Answer:
B. 658 3/7
Step-by-step explanation:
PLEASE HELP ME! I NEED HELP FROM 13-14
Answers
I’m not sure about 14 though. Sorry :( But i hope i helped.
Answer:
13 the answer is 678 is a even number 14 is divide 36 by 6
Step-by-step explanation:
brainliest?
what is the average between (25,28.8,39.2,51.2,64.8,80)? Please help me!
Answers
Answer:
48.17
Step-by-step explanation:
Average = sum of numbers / number of numbers
Sum of numbers = 25 + 28.8 + 39.2 + 51.2 + 64.8 + 80 = 289
Number of numbers = 6
Average = 289 / 6 = 48.17
=>average = 289/6 = 48.167
( since average = sum of observations divided by number observations)
Identify the number that is a multiple of 9.
3
63
33
78
Answers
Answer:
63
Step-by-step explanation:
63 - > 3+6 = 9 as 6+3 = 9 then 63 is a multiple of 9
33 - > 3+3 = 6
78 - > 7+8 = 15 -> 1+5 = 6
The number is :
↬ 63Solution:
Let's quickly check what numbers are divisible by 9.
3 can't be evenly divisible by 9.
63 is divisible (according to the multiplication table)
33 isn't divisible by 9 either
78 is no different.
Hence, a multiple of 9 is 63.Quick way to identify multiples of 9 :
If the digits of the number add up to 9, then the number itself is a multiple of 9.
What is the solution of the equation n+13=30 ?
Answers
Answer:17
Step-by-step explanation:
1) 30 -13=17
n=17
please answer quickly
Answers
Answer:
37.5
Step-by-step explanation:
cosФ = \(\frac{A}{H}\)
cos(33°35') = \(\frac{m}{45}\)
m = 45 × cos(33°35')
m = 37.5 (1d.p.)
How many minutes are from 5:32 Pm to 6:19 Pm?? PLEASEEEE HELP!!!! THIS IS URGENT PLEASEE HELP
Answers
The members of a film crew are at least 75 miles from their camp and must carry equipment back to camp before a storm arrives. The storm is scheduled to begin in 24 hours. They plan to travel as far as possible by truck and then walk the rest of the way. The truck can travel at a rate of 10 miles per hour through the terrain, and the team can travel 2 miles per hour on foot. Which system represents the number of hours the crew can travel by truck, x, and on foot, y, to reach camp before the storm? x + y < 24 2x + 10y ≥ 75 x + y > 24 2x + 10y ≥ 75 x + y < 24 10x + 2y ≥ 75 x + y > 24 10x + 2y ≥ 75
Answers
Answer:
I DONT UNDERSTAND ANY OF THIS
Step-by-step explanation:
Answer:
25
Step-by-step explanation:
please answer quickk! Full understandable answer
Answers
Answer:
Step-by-step explanation: 17 spins and 3 are blue so 3/17 is the probability written as a fraction in it's simplest form
Before you multiply or divide a fraction by a mixed number, you have to make sure they are both in the same___________?
Answers
Answer:
Step-by-step explanation:
form. Meaning you need make both fractions improper
The histogram shows the scores on a recent science test.
Using the histogram, select all of the true statements that describe the data.
(Pls help the correct answer gets brainiest)
Also, remember to look at all the pages.
And their is more than one answer
Answers
Answer:
Answer In Explanation
Step-by-step explanation:
O More Than Half Of The Students Scored 81 Or Better
O The Same Number Of Students Scored Between 81 And 90 On The Test As Scored Between 61 And 80
-The Last One Is Confusing Because It Doesn't Say 71-80
Options (B) and (D) are true statements that describe the data in the histogram are the correct answers.
What is a histogram?A histogram is a visual way to display frequency data using bars. It is a chart that shows frequencies for intervals of values of a metric variable. It is a display of statistical information that uses rectangles to show the frequency of data items in successive numerical intervals of equal size.
For the given situation,
The histogram shows the scores on a recent science test.
We need to check the options, which statements describe the data.
Option A: Only two students scored less than 71 on the test.
There are four students scored less than 71.
So option A is false.
Option B: More than half of the students scored 81 or better on the test.
Students scored more than 81 = \(16+8\)
⇒ \(24\)
Total number of students = \(40\)
Half of the students = \(\frac{40}{2}\)
⇒ \(20\)
Thus, \(24 > 20\)
So option B is true.
Option C: More students scored between 91 and 100 on the test than scored between 71 and 80.
Students scored between 91 and 100 = \(8\)
Students scored between 71 and 80 = 12
⇒ \(8 < 12\)
So option C is false.
Option D: The same number of students scored between 81 and 90 on the test as scored between 61 and 80.
Students scored between 81 and 90 = \(16\)
Students scored between 61 and 80 = \(4+12\)
⇒ \(16\)
Thus, \(16=16\)
So, option D is true.
Option E: There were 12 students who scored 80 on the test.
The score range is between 71 to 80. So we could not predict the number of students who score 81.
So option E is false.
Hence we can conclude that options (B) and (D) are true statements that describe the data in the histogram are the correct answers.
Learn more about histogram here
https://brainly.com/question/7219552
#SPJ2
You're at a clothing store that dyes your clothes while you wait. The store offers 444 different articles of clothing and 333 colors.
If you randomly choose the article of clothing and the color, which of these diagrams can be used to find all of the possible outcomes?
Choose all answers that apply:
Answers
Answer:
B
Step-by-step explanation:
I'm really not sure how to explain this.
A composite figure has a radius of 10 cm.
A circle with radius of 10 centimeters. One-quarter of the circle is cut out of the figure.
What is the area of this composite figure? Use 3.14 for Pi.
23.55 centimeters squared
78.5 centimeters squared
235.5 centimeters squared
314 centimeters squared
Answers
Answer:
C, 235.5 cm^2
Step-by-step explanation:
Formula for area of circle:
A = πr^2
Where π represents pi(3.14 or 22/7) and r represents the radius.
Plug in given value (10):
A = πr^2
A = 3.14(10)^2
A = 3.14(100)
A = 314
Now they say a quarter of this circle is cut out, which means we have to first find out what a quarter of this area is:
314/4
= 78.5
A quarter of this circle is 78.5, so let's subtract this from the total area (314):
314 - 78.5
= 235.5 cm^2
The area is 235.5 centimeters squared.
can somebody please help me, i really didnt understand my teacher at all
Answers
Answer:
Step-by-step explanation:
It is a solution because if you plug in 84 for b you get 84/12 = 7
The table shows the multiplication of two linear expressions. Select the correct reason for each step.
Reason 1:
Reason 2:
Reason 3:
Reason 4:
Answers
Answer:
Step-by-step explanation:
reason 1:
opening of brackets to solve the expression
reason 2:
in multiplication order is followed i.e. the number always lead the variable in the expression
reason 3:
for clarification brackets are added to multiply like terms i.e. numbers with numbers and variable with the variable
reason 4:
the solved and simplified expression is delivered as a result
X Y
-7 0
0 1
What is the slope of the linear function represented in
the table?
*-7
07/1
01/1
07
Answers
the formula for slope is rise over run, or y1-y2 divided by x1-x2. we can choose either number as y1 or y2 but it needs to stay consistent with x
so let’s plug in from your table.
0-1 divided by -7 -0
(you could also do 1-0 divided by 0-(-7))
-1/-7 which equals 1/7
so, your slope is 1/7
I hope this helps! :)
ASAP!!! A proportional relationship is shown in the table below. X: 0 0.3 0.6 0.9 1.2 Y: 0 1 2 3 4 What is the slope of the line that represents this relationship? Graph the line that represents this relationship.
Answers
helpppppppp pleaseeee giving 50 points
Answers
Please help me i really need to pass this!
Answers
Answer:
i think A but can be B
Step-by-step explanation:
Four students share a $271 prize from a science competition. How much does each student get if the prize is shared equally?
Answers
Estimate: 12 8/9 - 4 2/11
A) 9
B) 10
C) 8
D) 7
Answers
Explanation: 12 8/9 can be rounded to 13 and 4 2/11 can be rounded to 4. 13-4 is 9.
The tire of a car has a radius of 10.5 inches. How many rotations does the tire need to make five for the car to travel 3,297 inches? Use 3.14 for .3
Answers
Apply proportions to interpret scale drawings and solve problems based on scale ratios
Answers
Answer:What is this i dont see any picture or question is the question at another thingy?
Step-by-step explanation:
ANSWER ASAP -4x-4/3=x-6
Answers
Answer:
x = 0.9333333
Step-by-step explanation:
-4x - 4/3 = x - 6 Multiply through by 3
-12x - 4 = 3x - 18 Add 12x to both sides
-12x+12x-4 = 3x+12x - 18 Combine like terms
-4 = 15x - 18 Add 18 to both sides
-4+18=15x - 18 + 18 Combine like terms
14 = 15x Divide by 15
14/15 = x
x = 0.933333
Patrick plotted points A and B on the coordinates grid below.
Answers
Answer:
A(2,7)
B(-6,-1)
Step-by-step explanation:
explanation:
y=mx+b .
Using the calculations for each ingredient:
How much did Hector's homemade sandwich cost?
Hint: Remember the total cost for the bread is $0.16.
A : 1.90
B : 2.00
C : 2.99
D : 1.74
Answers
Answer:
i think it is
Step-by-step explanation:
Winnie should buy the 12 pound bags.
A restaurant sells burritos for $8.00 each. To buy supplies, the restaurant pays $1.50 for the meat and $1.00 for the other ingredients in each burrito.
What is the cost of making 100 burritos?
Answers
Answer:
$250
Step-by-step explanation:
you add cost of meat and other ingredients
1+1.5=2.5
x100 cause there are 100 burritos
2.5x100
$250
Answer:
$250
Step-by-step explanation:
you include cost of meat and different fixings
1+1.5=2.5
x100 = 2.5x100 = $250
Write a ratio and a percent for the shaded area.
Please help, ASAP!!
