Answer:
Mean of this data set is 43.7857
the median of this data set is 42
Step-by-step explanation:
The complete question is:
Fifteen seventh graders were randomly selected to see how many pushups in a row they could do. Their data are shown. A. b. 45, 40, 36, 38, 42, 48, 40, 40, 70, 45, 42, 43, 48, 36
a. Determine the mean of this data set.
b. Determine the median of this data set.
Given:
Data:
45, 40, 36, 38, 42, 48, 40, 40, 70, 45, 42, 43, 48, 36
To find:
a) Mean
b) Median
Solution:
a)
The formula to find Mean is :
Mean = Sum of all the values / Total number of values
= ∑ x / n
Here there are total 14 values so n = 14
Now lets find sum of all the values
∑ x = 45 + 40 + 36 + 38 + 42 + 48 + 40 + 40 + 70 + 45 + 42 + 43 + 48 + 36
= 613
Now compute Mean:
Mean = ∑ x / n
= 613 / 14
= 43.785714
Mean = 43.7857
b)
The formula to find Median is:
Since there are 14 values in the data this means the data has even number of values. So to compute the median of even number of values:
First put the values in order.
Second, find the middle pair of values in data
Third, find the value that is half way between them i.e. by adding the two middle pair values and dividing the result by 2
45, 40, 36, 38, 42, 48, 40, 40, 70, 45, 42, 43, 48, 36
Ordering the values :
36, 36, 38, 40, 40, 40, 42, 42, 43, 45, 45, 48, 48, 70
Find the middle two numbers:
42, 42
We can see that both are same values so median value is 42 but to follow the above steps:
Now add these two numbers and divide the sum by 2:
42 + 42 = 84
84/2 = 42
So the median of this data set is 42
what is 9/10 divided by 6.5
Answer:
0.13846153846
Answer:
=.14
Step-by-step explanation:
9/10=.9
.9/6.5= .1384615385=.14
Five years ago, an average model 70” TV cost about $2,400. Now a similar TV costs approximately $1,680. What is the percent decrease in TV price?
FOR 15 POINTS CMON PLEASE ANSWER IT
Answer:
30%
Step-by-step explanation:
If 2400$=100%
1680$=?
100×1680$÷2400$=70%
100%-70%=30%
So, the TV price decreasee by 30%.
Please help me I am stuck :(
Answer:
Step-by-step explanation:
This is a definite maybe kind of question.
Start with the 280. It has a range of 280 +/- 10 mL. That means that each serving is between 270 and 290. If she serves exactly 280 every time she will need 22 * 280 = 6160 mL or 6160/1000 = 6.16 L which gives her a margin of 0.340 L or 340 mL
Consider 270 mL
270 mL * 22 = 5940 mL or 5.94 L She has a little over 1/2 L left over. She has enough soup for 22 people.
Finally think about 290 per serving
290 * 22 = 6380. This should work as well providing she has more than 6.38 Liters which is not a slam dunk. With a leeway of 0.5 L and she only makes 6 Liters, she does not have enough.
So maybe. (Since you can explain this question, you can, I should think, use 0.5 Liters as a leeway).
There is one condition I have not considered and that is what happens if you have 7 Liters of soup? Then the leeway in the serving size does not matter.
Which proportional statements are true of the
enlargement? Check all that apply.
width original width enlargement
length original length enlargement
length original width original
length enlargement width enlargement
width original length original
length enlargement width enlargem ent
width enlargement width original
length enlargement length original
length original length enlargement
width enlargement
width original
Answer: number 1 2 and four are correct
Step-by-step explanation:
I DID THE SAME THING
Answer:
1,2,4
Step-by-step explanation:
identify if it is Rational or Irrational
number and explain:
1. 0. 13546...
2. 149
Answer:
149
Step-by-step explanation:
jsusbz zkzvuz ziz ussiziz zuzvzuz sien sous un sus sous sus
Write the equation of the line that passes through the given points.
(0,−1) and (−3,−9)
Let's write the line in slope-intercept form.
y = mx + b
m = slope
b = y-intercept.
Let's use the two points to calculate our slope.
Slope = (-9 -(-1)) / -3 = -8 / -3 = 8 / 3
Our line so far: y = 8/3x + b
Let's plug one of our points into the equation to find b.
-1 = 8/3(0) + b
-1 = b
Our line is: y = 8/3x - 1
Plot the following points (3,6); (-1,6) and (-1,-6) on a grid to create three vertices of a rectangle. Find the missing vertex that would make it a rectangle.
Answer: (3,-6)
Step-by-step explanation: Find the answer by finding the negative of the other number.
diana charges $10 for a house call plus $35 an hour for electric work.If she made $150 on one job,how many hours did she work
Answer:
She worked for 4 hours
Step-by-step explanation:
150-10=140
140/35=4
A ballroom has a square dance floor. The area of the floor is 400 square feet.
If the length of each side of the square increased by one foot, would its area be a rational number?
Choose all that apply.
Answers:
A. - The area of the floor would be a rational number.
B. - The area of the floor would be an irrational number.
C. - Each side length would be a perfect square.
D. - The area of the floor would be a perfect square.
E. - The area of the floor would be a nonterminating, nonrepeating decimal.
Answer:
D
Step-by-step explanation:
Area of square=400sq.ft
or,l²=400sq.ft
or,l=(400sq.ft)½
or,l=(20²sq.ft)½
or,l=20ft
Thus,length of square is 20ft.
If length of square is increased by 1 ft then ,
New length=(20+1)ft=21ft
Area of square=(21ft)²
=441sq.ft
The rise and span for a roof is the ratio of the rise to the half-span. If the rise is 8 feet and the span is 30 feet,what is the pitch in simplest form?
Answer:
8 feet to 15 feet or [tex]\dfrac{8}{15}[/tex].
Step-by-step explanation:
We know that pitch is is the ratio of the rise to the half-span.
It is given that, the rise is 8 feet and the span is 30 feet.
[tex]\text{Half of span}=\dfrac{30}{2}=15[/tex]
We need to find the pitch in simplest form.
[tex]Pitch=\dfrac{\text{Rise}}{\text{Half-span}}[/tex]
[tex]Pitch=\dfrac{8}{15}[/tex]
Therefore, the pitch in simplest form is 8 feet to 15 feet or [tex]\dfrac{8}{15}[/tex].
I need help in these two problems. Please show work
Answer: (A)
Step-by-step explanation: I hope this helps!
what is
not a characteristic of a point
Answer:
this does not make scence pls make more scence in the next question
perry won 45 super bouncy balls playing horse shoes at the county fair. at school he gave 2 to every student in his class he has 3 remaining how many students are in his class
Answer:
In total there are 21 students altogetherAnswer:
21
Step-by-step explanation:
What is the answer to 5ab 4c = ?
Answer:
the answer is 20abc
Step-by-step explanation:
5ab 4c
20abc
mark me as brainliest plyyyzzz
I don’t understand???
Answer:
C
Step-by-step explanation:
Its D because the arrow is facing away from 50 so that means she will have at least 50 then it says 6m and m stands for month soo 6 new shells every month and she already has 8. I hope my answer helps i might sound kinda confusing sorry
What is21/11
as a decimal?
Answer:
1.90909 (Rounded to fifth decimal place)
Step-by-step explanation:
Answer:
1.909....
Step-by-step explanation:
IF HJ = 7x-27, find the value of x
Answer:
x= (1/7)hj + (27/7)
Step-by-step explanation:
1) Flip the equation:
7x-27=hj
2) add 27 to both sides
7x = hj +27
3) divide both sides by 7
x = 1/7hj + (27/7)
Three students are running for class president at Madison High School. Helen has h votes, Jami has h - 26 votes, and Rick has h + 11 votes. Which of the following statements is true regarding Rick's votes? A. Rick has 11 more votes than Jami. B. Rick has 37 more votes than Helen. C. Rick has 11 less votes than Helen. D. Rick has 37 more votes than Jami.
Answer:
i believe its d
Step-by-step explanation:
h-26=11
+26. +26
h=37
Answer:
Rick has 37 more votes than Jami.
Step-by-step explanation:
Helen's votes : h
Jami's votes : h - 26 : Jami has 26 votes less than Helen.
Rick's votes : h + 11 : Rick has 11 votes more than Helen.
Therefore, Rick has 37 more votes than Jami.
The numbers 1.444 and 1.555 are both rational numbers. Which of the following is an irrational number that is between these two rational numbers? Use pencil and paper. Show why there has to be an irrational number between any two rational numbers. 2.445444... 1.554555... 1.445 1.445444 A. 1.554555 B.1.445 C.2.445444 D.1.445444
Answer:A.) 1.554555
D.)1.554555 are irrational numbers.
Step-by-step explanation:
A. 1.554555 and D. 1.445444 both are an irrational number that lies between the numbers 1.444 and 1.555. Options A and D are correct.
Given that,
The numbers 1.444 and 1.555 are both rational numbers. Which of the following is an irrational number that is between these two rational numbers is to be determined.
In mathematics, a rational number is a number that can be described as the result of a fraction of value or does not have face value.
Here,
A. 1.554555 - irrational B.1.445 - rational
C. 2.445444 - rational D.1.445444 - irrational
Thus, A. 1.554555 and D. 1.445444 both are irrational number that lies between the numbers 1.444 and 1.555. Options A and D are correct.
Learn more about rational numbers here:
https://brainly.com/question/17450097
#SPJ6
please help me please
Answer:
< 3, < 5
Step-by-step explanation:
< 3 is congruent to 36° due to the vertical angles rule which says that any angle across form each other is congruent
Round 161.69 to the nearest tenth
Answer:
To the Nearest Tenth?!
I got's you my G
= 161.7
Step-by-step explanation:
Which rate describes a unit price?
$0.35 per minute
Answer:
0.75 I think but I'm sure that it's right
HELPP!!
For this graph, mark the statements that are true
A the domain is the set of all real numbers m
B the range is the set of all real numbers
C the domain is the set of all real numbers greater than it equal to zero
D the range is the set of all real numbers greater than it equal to zero
What is the solution of Vx2+49 = x+5?
0 x = 12
12.
5
12.
X=-
5
x = -6 or x=-3
no solution
Drag and drop the statement that shows the solution to the equation into the box. Response area 2 1/7+3/7(3x−5)=−4
Answer:
21
Step-by-step explanation:
x = -3 1/9
took the quiz lol
The perimeter of a rectangle is 60 meters. Its length is 10 meters. What is its width?
Answer:
[tex]\boxed {\tt 20 \ meters}[/tex]
Step-by-step explanation:
The perimeter of a rectangle can be found using the following formula.
[tex]p= 2l+2w[/tex]
We know the perimeter is 60 meters and the length is 10 meters.
[tex]p=60 \ m[/tex]
[tex]l= 10 \ m[/tex]
Substitute the values into the formula.
[tex]60 \ m = 2(10 \ m) + 2w[/tex]
Multiply 2 and 10.
[tex]60 \ m = 20 \ m +2w[/tex]
Subtract 20 from both sides of the equation.
[tex]60 \ m - 20 \ m = 20 \ m - 20 \ m +2w[/tex]
[tex]60 \ m - 20 \ m =2w[/tex]
[tex]40 \ m = 2w[/tex]
Divide both sides of the equation by 2.
[tex]\frac{40 \ m}{2} =\frac{2w}{2}[/tex]
[tex]\frac{40 \ m}{2} =w[/tex]
[tex]20 \ m =w[/tex]
The width of the rectangle is 20 meters.
What is the total number of digits required in numbering the pages of a book, which has 10 pages?
Answer:
1450
Step-by-step explanation:
Answer:
11 digits
Step-by-step explanation:
1,2,3,4,5,6,7,8,9,10
(1*9)+2
added 2 because 10 has 2 digits
simplify 30/14 please
Step-by-step explanation:
30/14
2.1428571429
hope that helps
f(x)= 3x+1 find f(4)
Evaluate the following: 42 ÷ (3 + 1). (5 points)
3
4
2
1
Answer:
10.5
Step-by-step explanation:
You have to follow the rules of order of operations. PEMDAS. Parenthesis are first, so you solve (3+1). 3+1=4. Then you divide. 42/4=10.5
