If m = -4 and n = 7, what is the value of m - n?
11
-3
-11
3
Answers
Answer:
-11
Step-by-step explanation:
-4 - 7 = -11
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:
Which of these two tables represent a function
Select one or more
a. Table A
b. Table C
c. Table B
Answers
Answer:
b
Step-by-step explanation:
the table b...because it has negative and positive
Plz help, asap!!
This is a triangular prism
perimeter of the base is:
Height is:
Base area is:
Volume is:
Surface area is:
Answers
Answer:
Perimeter of base: 50 cm
Height: 30 cm
Base area: 60 cm
Volume: 21,600 cm
Surface area: I am sorry I forget how to do surface area, but I hope everything else helps.
Step-by-step explanation:
perimeter of base: 50 cm
13+13=26+24=50
Height: 30 cm
already shows height.
Base area: 60 cm
1) 24/2=12 2) 5*12=60
Volume: 21,600 cm
Length*Base*height/2=24*60*30=43,200/2=21,600
surface area:
Sorry I forget how to do surface area.
Answer:
Perimeter of base: 50 cm
Height: 30 cm
Base area: 60 cm
Volume: 21,600 cm
Surface area: I am sorry I forget how to do surface area, but I hope everything else helps.
Step-by-step explanation:
perimeter of base: 50 cm
13+13=26+24=50
Height: 30 cm
already shows height.
Base area: 60 cm
1) 24/2=12 2) 5*12=60
Volume: 21,600 cm
Length*Base*height/2=24*60*30=43,200/2=21,600
At a recent football game of 8,450 in attendance, 150 people were asked what they prefer on a hot dog. The results are shown.
Ketchup Relish Chili
54 36 60
Based on the data in this sample, how many of the people in attendance would prefer ketchup on a hot dog?
4,225
3,380
3,127
3,042
Answers
By proportion that is:(54/150) * 8450= 54 * 56 1/3= 3042
Answer:
By proportion that is:(54/150) * 8450= 54 * 56 1/3= 3042
Step-by-step explanation:
does this make sence to anyone
Answers
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.
In 1-4 find two ratios equivalent to the given ratio
1. 5/12
2. 14:32
3. 3 to 4
4. 7/8
Answers
Step-by-step explanation:
1. we can multiply by 2 and 3
So: \(\frac{10}{24}\) and \(\frac{15}{36}\)
2. we can divide by 2 and multiply by 2
\(\frac{7}{16}\) and \(\frac{28}{64}\)
3. we can multiply by 2 and 3
\(\frac{6}{8}\) and \(\frac{9}{12}\)
4. we can multiply by 2 and 3
\(\frac{14}{16}\) and \(\frac{21}{24}\)
Answer:
Step-by-step explanation:
To find two ratios equivalent, multiply or divide the numerator and denominator with same number.
1) 5/12
\(\frac{5*2}{12*2}=\frac{10}{24}\\\\\frac{5*3}{12*3}=\frac{15}{36}\)
2) 14 : 32
14÷2 : 32÷ 2 = 7: 16
14*2 : 32*2 = 28 : 64
3) 3 to 4
3*3 : 4*3 = 9 : 12
3:4 : 4*4 = 12 : 16
4) 7/8
\(\frac{7*2}{8*2}=\frac{14}{16}\\\\\frac{7*5}{8*5}=\frac{35}{40}\)
Pls solve and show all work
Answers
So it is 6
Elena wants to create a triangle shaped garden that has an area of 36 square feet Name all the different dimensions her triangle can be in feet. Pls help
Answers
Answer:
Base = 18 Height = 4 (this is an example)
Step-by-step explanation:
Given that the triangle has an area of 36 square feet, and that the triangle area formula is A=1/2bh (b being the base, and h being the height), we can fill in the formula to get the dimensions.
To find the given numbers, we need to find what numbers are divisible to by 2 to get 36. For instance using the formula A=1/2bh, we can plug in the factors that make up 72 (if you divided it by two you will get 36). Example of this is 18x4, so we can plug it into the equation to prove it through factor trees (feel free to reach out if you have a question about those). Plugging 18 and 4 will give 18x4 divided by 2 = 36.
Simplify the expression. Write your answer as a power.
Answers
Answer:
\(( {g}^{6} ) ^{3} = {g}^{18} \)
I hope I helped you^_^
Hope this is going to help you with your question
PLEASE HELP!!!!! QUICK PLSSS
Answers
- SS postulate, 2 sides of triangle r equal, meaning 3rd is most likely equal I think.
- so all angles r equal
- all interior angles r congruent. so r exterior
180 - 97 = 83
Randy weighs 50 pounds and his father weighs 160 pounds. What is the difference in their weights?
A. 100 lb.
B. 110 lb.
C. 120 lb.
D. 125 lb.
(Would like a explaination too btw)
Answers
Answer:
This looks pretty easy. Is this a trick question or what? I might be wrong but the answer seems to be B. 110 lb.
Step-by-step explanation:
Solution:
Given,
weight of Randy = 50 pounds
weight of his father = 160 pounds
difference in their weights = ?
Now,
difference in their weights =
weight of his father - weight of Randy
= 160 - 50
= 110 pounds
Therefore, the difference in their weights is 110 pounds.
please help me. the answers are: A. 47 1/4 ft^3
B. 94 1/2 ft^3
C. 189 ft^3
D. 378 ft^3
Answers
Answer:
C. 189 ft^3
Step-by-step explanation:
hope this helps
Shelly is asked to put parentheses in the equation
14−8−5+6×2=23 so that it is true.
Choose the correct expression.
A. 14−8−(5+6)×2=23
B. 14−(8−5)+6×2=23
C. 14−8)−(5+6)×2=23
D. 14−(8−5+6)×2=23
Answers
Answer:
C)(14-8)-(5+6)×2=23
using bodmas
find the area of this circle. use 3 for pi.
Answers
Answer:
108
Step-by-step explanation:
a = pi(r^2) is the same as a = 3(6^2).
6 x 6 = 36
36 x 3 = 108
So the answer is 108 cm squared.
Mickey spent 3 1/4 hours practicing his trumpet. He needs to spend 5 1/2 hours to receive an A in band. How many more hours does Mickey need to spend practicing his trumpet?
Please try to give me a step by step explanation ^_^
Answers
Answer:
2 \(\frac{1}{4}\)
Step-by-step explanation:
5 1/2 - 3 1/4
1/2 is the same as 2/4
5 \(\frac{2}{4}\) - 3 \(\frac{1}{4}\) = 2 \(\frac{1}{4}\)
Answer: 2 1/4
Step-by-step explanation: 5 1/2 - 3 1/4
5 1/2 = 5 2/4
5 2/4 - 3 1/4 = 2 1/4 So Mickey needs to spend 2 1/4 more hours on his trumpet.
What is the equation in slope-intercept form that represents the information? y=mx+b.
(2 points)
D. How much money will you save after 20 weeks? (2 points)
Answers
Answer:not y=1/2x+2
not so sure about answer i am new to this
HELP ANSWER HOWLE PAGE PLS
Answers
Step-by-step explanation:
an acute angle is less then 90 degrees, a right angle is 90 degrees, an obtuse angle is more than 90 degrees, a straight angle is 180 degrees, and a reflex angle is more than 180 degrees but less then 360 degrees
help me please, i would be very grateful!!
Answers
Tennis: 7th grade - 14
swimming: 7th grade 9 total =23
Tennis: 8th grade- 8
Swimming: 8th grade 11 total = 19
Tennis total = 22
Swimming total = 20
grand total = 42
Tennis: 7th grade - 14
swimming: 7th grade 9 total =23
Tennis: 8th grade- 8
Swimming: 8th grade 11 total = 19
Tennis total = 22
Swimming total = 20
I NEED HELP ASAP BEFORE IT TIMES OUT!
Answers
Rectangle one:
A=lw
A=4(12)
A=48
Rectangle two:
A=lw
A=10(2)
A=20
Add both areas up to get 68 ft squared!! :)
Answer:
68 square feet.
Step-by-step explanation:
My way of doing it is to first, split the shape where the length is different so it would be easier to solve. That means you should have the bottom part of the shape split from the whole shape, which makes 2 rectangles. The bottom rectangle should have the length of 2 feet, and the width of 10 feet on both parallel sides. The top rectangle should have the length of 4 feet, and the width of 12 feet on both parallel sides.
Next, you multiply both rectangles by their width and length. For example, first start with the first rectangle on the top. You should multiply the length, 4 feet by the width, 12 feet. Then, for the bottom rectangle, multiply the length, 2 feet by the width, 10 feet.
1.) 4 x 12 = 48
2) 2 x 10 = 20
Lastly, add the two numbers to get the answer.
48 + 20 = 68
15 points to whoever answers this!!
Answers
Answer:
\(\frac{16}{27}\)
Step-by-step explanation:
From the table, we notice that the total number of students is:
\(3+10+8+6=27\)
Then, along the second column of the table, we notice that the number of students who do not have a brother is:
\(10+6=16\)
So, the probability that a randomly chosen student does not have a brother is:
\(\frac{\text{number of students who do not have a brother}}{\text{total number of students}}=\frac{16}{27}\)
can someone please help me
Answers
Answer: A, B, E
Step-by-step explanation:
How to find the altitude of an equilateral triangle if the side of length is given?
Answers
Answer:
Step-by-step explanation:
The main application use of altitude is that it is used for area calculation of the triangle, i.e. area of a triangle is (½ base × height). ...
For an obtuse-angled triangle, the altitude is outside the triangle. ...
Therefore, the Altitude (Height) of an equilateral triangle = h = (√3/2) × s.
For an obtuse-angled triangle, the altitude is outside the triangle. ...
Therefore, the Altitude (Height) of an equilateral triangle = h = (√3/2) × s.
The value of \(\frac{0}{(m+n)}\) is part of what subset(s) of the real numbers? Select all that apply.
-integers
-whole numbers
-irrational numbers
-rational numbers
Answers
Answer:
two in the middle
Step-by-step explanation:
Step by step
Robin wants to buy a membership at a carwash this summer so that she can keep her car clean. She compared deals from Speedy Clean Carwash and Sudsy Bubbles Carwash to decide which membership to get. Robin arranged the information in the tables below.
How many times will Robin need to wash her car to spend the same amount at both carwashes?
P.S.: I attached the table below:)
Answers
call some one help ia m not good with math and my teacher is sooo strict this dow in 10 min can can some one help me plzzzzzz this for 2o points that how bad I need this
Answers
Answer:
Step-by-step explanation:
Plz Name me brainlieset I would greatly appreciate it alot
7. Triangle is the image of triangle after a rotation around the midpoint of segment . Triangle is the image of triangle after a 180 degree
rotation around the midpoint of segment . Please aw set all the questions.
Answers
Answer:
Both points are c
Step-by-step explanation:
This shape is a parallelogram because none of the points intersect with the opposite side.
A to B is a Horizontal line. so that means D and C are also horizontal.
A, B and C, D will never intersect because they are a straight line.
—————————————————————
ABEC
ABEC is a parallelogram because there are two opposite sides that will never intersect.
A to B is a horizontal line. Also, E, C is another horizontal line and since they are on opposite sides they can never touch!
Hope this helps!
(Mark brainliest if I’m correct!)
need answer for these qyestion
Answers
thank you for asking me this question
Answer for question 4 is 30
All digits in a dropdown number are different, and one of its digits is the average of all its digits. It has at least two digits. For example, 5021 is a dropdown number, but neither 4389 nor 6033 is a dropdown number.
Questions:
1. Find the smallest dropdown number.
2. What are the smallest and largest 4-digit dropdown numbers?
3. How many 3-digit dropdown numbers are there?
4. Is it possible for a pair of consecutive numbers to both be dropdown numbers? If not, explain why not. If it is possible, find the smallest such pair.
Answers
1. Start the search among 2-digit numbers. A dropdown number (DDN) with 2 digits is a number \(ab\) such that
\(\dfrac{a+b}2 = a \implies a + b = 2a \implies b = a\)
or
\(\dfrac{a+b}2 = b \implies a+b = 2b \implies a=b\)
but both of these solutions violate the requirement that the digits are distinct, so there are no 2-digit DDNs.
A 3-digit DDN \(abc\) is such that
\(\dfrac{a+b+c}3 = a \implies a+b+c = 3a \implies b+c = 2a\)
or \(a+c=2b\) if the average is \(b\), or \(a+b=2c\) if the average is \(c\). The smallest possible value for \(a\) is 1 since we require 3 digits. Then \(b+c=2\), and we can pick \(b=0\) and \(c=2\) to get the smallest DDN, 102.
2. In a 4-digit DDN \(abcd\), we have
\(\dfrac{a+b+c+d}4 = a \implies a + b + c + d = 4a \implies b+c+d=3a\)
or \(a+c+d=3b\) or \(a+b+d=3c\) or \(a+b+c=3d\).
We're free to fix \(a=1\) and \(b=0\) to try to get the smallest DDN. This leaves us with \(c+d=3\) or \(c+d=-1\) or \(1+d=3c\) or \(c=3d\).
The first two cases are impossible - the only choices for \(c,d\) such that \(c+d=3\) are 1 and 2, and the sum of two positive integers must be positive. The smallest possible value of \(c\) is 2; this leaves us with \(1+d=6\) or \(2=3d\), but the latter case is impossible because 3 does not divide 2. So \(d=5\), and the smallest 4-digit DDN is 1025.
To find the largest DDN, start with the largest possible values for \(a\) and \(b\). Let \(a=9\) and \(b=8\). Then \(c+d=19\) or \(c+d=15\) or \(17+d=3c\) or \(17+c=3d\). At most, we can have \(c+d=13\) with 7 and 6, so the first two cases are impossible. If we maximize \(c=7\), then either \(17+d=21\implies d=4\) or \(24=3d\implies d=8\) (which we don't want). So the largest 3-digit DDN is 9874.
3. I don't have an analytical solution to this, but using brute force (program) the total count is 112.
4. It is possible; consider 1249 and 1250, with digital averages
\(\dfrac{1+2+4+9}4=4 \text{ and } \dfrac{1+2+5+0}4=2\)
which happens to be the smallest pair. (Also found with brute force.)
i need help with this
Answers
