Mathematics College

60 POINTS BRAINLIES
PLEASE WORKOUT QUESTIONS a b & c
PHOTO OF GRAPH ATTACHED BELOW

a) Calculate the median number of medals for each medal type, stating the formula you would use for determining the median for the gold medals.

b) Calculate the mean number of medals for each of the 3 medal types, stating the formula you would use for determining the mean for the bronze medals.

c) Calculate the standard deviation of the total medals awarded to each country
(column F) using the formula below.
Show all the steps ( show your work ).

USE the STDEV.P function to cross-check your final answer.

Answers

Answer 1

Answer:

see below

Step-by-step explanation:

a) median : re-arranged the numbers in order. i.e. min to max

gold: 147 , 147 , 175 , 206 , 212 , 227 , 263 , 275 , 440 , 1022

212 + 227 = 219.50

silver: 147 , 163 , 165 , 170 , 178 , 241 , 295 , 313 , 357 , 794

178 + 241 = 209.50

bronze: 151 , 169 , 179 , 187 , 193 , 260 , 289 , 325 , 349 , 704

193 + 260 = 226.50

b) mean : sum of all numbers divide by n, where n=10

gold: = (147 , 147 , 175 , 206 , 212 , 227 , 263 , 275 , 440 , 1022 ) / 10

= 311.40

silver: = (147 , 163 , 165 , 170 , 178 , 241 , 295 , 313 , 357 , 794 ) / 10

= 282.30

bronze: = (151 , 169 , 179 , 187 , 193 , 260 , 289 , 325 , 349 , 704 ) / 10

= 280.60

c) standard deviation on population (STDEV.P)

Australia = 16.44

china = 33.03

france = 19.74

germany = 30.21

great britain = 13.89

hungary = 12.04

italy = 11.44

soviet union = 48.46

sweden = 13.47

united states = 133.84

Related Questions

What does the value of the LCM represent? How many packs of red sticks and blue sticks should Harold purchase?

Answers

Answer:

LCM mean least common multiple

Step-by-step explanation:

The red sticks in a pack of 8 so, to get 24 red sticks, Harold needs = 3 packs. The blue sticks come in a pack of 12 to get 24 blue sticks, Harold need = 2 pack

Answer:

the LCM represents the minimum number of sticks of each color that Harold would have to buy to have the same number of blue sticks and red sticks.

The red sticks come in packs of 8. So, to get 24 red sticks Harold need 3 packs.

The blue sticks come in packs of 12, so to get to 12 blue sticks Harold needs 2 packs.

in conclusion Harold should purchase 3 packs of red sticks and 2 packs of blue sticks.

hope this helped ^^

5. If three times a number is increased by 4, the result is -8.

Answers

False

I think that’s right because three times 5 is 15 increased by four is 19 not -8 so...

Step-by-step explanation:

Hey there!

Let the unknown number be x. Then;

According to the question;

3x+4= -8

3x = -12

x = -12/3

Therefore, x = -4

Check:

3*-4 +4 = -8

-12+4 = -8

-8= -8 (True).

Hope it helps...

2/15 = h/125 need a step by step please

Answers

Answer: h = 50/3

====================================

Work Shown:

2/15 = h/125

2*125 = 15*h .... cross multiply

250 = 15h

15h = 250

h = 250/15

h = (5*50)/(5*3)

h = 50/3

-----------------

Extra info:

50/3 = (48+2)/3

50/3 = (48/3)+(2/3)

50/3 = 16 + (2/3)

50/3 = 16 & 2/3

The improper fraction 50/3 converts to the mixed number 16 & 2/3

Another way to see this is to use long division to get 50/3 = 16 remainder 2.

What is the sign of the product (3)(−25)(7)(−24)?

A. Positive, because the products (3)(−25) and (7)(−24) are negative, and the product of two negative numbers is positive
B. Positive, because the products (3)(−25) and (7)(−24) are positive, and the product of two positive numbers is positive
C. Negative, because the products (3)(−25) and (7)(−24) are negative, and the product of two negative numbers is negative
D. Negative, because the products (3)(−25) and (7)(−24) are positive, and the product of two positive numbers is negative

Answers

I think it is B because I had that

1) Suppose you buy a laptop costing $1850 at a store charging 12% add-on interest, and you make a $500 down payment.

Answers

Find the exact value using trigonometric identities.

1850 , 0.12 , − o n , 500 a

Need help ASAP with my math

Answers

U need a calculator for that lol

Answer: The answer is -2

Step-by-step explanation: I want points and trust me this answer is correct

Factorise fully
40-10g

Please do quick, will mark brainiest!!

Answers

Answer:

10(4-g)

Step-by-step explanation:

[tex]40 - 10g[/tex]

Rewrite 40 as 4 × 10

[tex]4 \times 10 - 10g[/tex]

Factor out 10

[tex]10(4 - g)[/tex]

Megan had $235.17 in her bank account. She withdrew $77.98 from the account to spend
on clothing. How much money does she have left in her bank account now?

Answers

Answer: 157.19

Step-by-step explanation:

157.19 that would be the answer

-6(x - 6) = x(16 - 7)
Help please

Answers

Answer:

the answer would be x equal 2.4

Step-by-step explanation:

sorry for my bad handwriting

Solve for X please :(( Will give brainliest.

Answers

5x+6+92 = 22x-4

5x+98 = 22x-4

add 5x to both sides

98 = 27x-4

add 4 to both sides

102 = 27x

divide both sides by 27

x = 3 and [tex]\frac{7}{9}[/tex]

Explain how to use the distributive property to find an expression that is equivalent to 20+16.

Answers

Step-by-step explanation:

distributive property is a*(b+c) = a*b + a*c

20+16 = 4* (5+4)

The temperature at 4:00 p.m. was 2.5'F. It
dropped 0.75°F each hour for the next 4 hours.
What was the temperature at 8:00 p.m.?

Answers

Answer:-0.5; 0.75*4=3, 2-3=-0.5

Step-by-step explanation:

Answer:

-0.5...............

A florist sold 45 flowers in a day and 60 flowers on the next day. If p is the percent increase in the number of flowers sold, which proportion can be used to calculate p?

Answers

Answer:

Step-by-step explanation:

i took the test

Answer: C

Step-by-step explanation:

Only one that makes sense and I just took that test

Show that each conjecture is false by finding a counterexample.

1.For any integer n, n3 > 0.

2. Each angle in a right triangle has a different measure.

3.For many years in the U.S, each bank printed its own currency. The variety of different bills led to widespread counterfeiting. By the time of the Civil War, a significant fraction of the currency in circulation was counterfeit. If one soldier had 48 bills, 16 of which were counterfeit, and another soldier had 39 bills, 13 of which were counterfeit, make a conjecture about what fraction of bills were counterfeit at the time of the Civil War.

Answers

Answer:

1. [tex]n: n^3 > 0[/tex] is not true for negative integers

2. [tex]45\ and\ 45[/tex] show that all angles do not have different measure

3. [tex]Fraction = \frac{1}{3}[/tex]

Step-by-step explanation:

Solving (1):

[tex]n: n^3 > 0[/tex]

Take

[tex]n = -1[/tex]

[tex]-1^3 = -1[/tex]

[tex]n: n^3 > 0[/tex] is not true for negative integers

Solving (2):

The angles of a right angled triangle are:

[tex]45, 45\ and\ 90[/tex]

[tex]45\ and\ 45[/tex] show that all angles do not have different measure

Solving (3):

When

[tex]Bills = 48[/tex]

[tex]Counterfeit = 16[/tex]

The fraction is calculated as thus:

[tex]Fraction = \frac{Counterfeit}{Bills}[/tex]

[tex]Fraction = \frac{16}{48}[/tex]

[tex]Fraction = \frac{1}{3}[/tex]

Similarly, when

[tex]Bills = 39[/tex]

[tex]Counterfeit = 13[/tex]

[tex]Fraction = \frac{Counterfeit}{Bills}[/tex]

[tex]Fraction = \frac{13}{39}[/tex]

[tex]Fraction = \frac{1}{3}[/tex]

I need help with this

Answers

Answer: 7 - 10⁻²

Steps: 1.4 · 10² / 2 · 10³ = 7 - 10⁻²

Plz mark brainliest:)

She’s right with the answer

Is 60N Cold or hot

Answers

Answer:

It is warm.

Step-by-step explanation:

(-8) X 2/3 i NEED the answer help me

Answers

-5.33333333333

I used a calulator can I get brainliest please

What is the value of j

Answers

the value of j is 66 degrees

180- 82= 98
98 - 32 = 66

So it’s 66

11. Factor for

12 – 8.1 + 16

Answers

I’m going to go ahead and say the answer is 19.9... sorry if it’s wrong.

Answer:

2(6-4.05+8)

Step-by-step explanation:

2(6-48+43.05+8)

2/3 divided by ? = 6/8 ASAP

Answers

Answer: 1/72 in decimal form 0.01389

Step-by-step explanation:

Answer:

im pretty sure it is 8/9

Step-by-step explanation:

6/8 x 8/9 =2/3

x+y=k
x-y=k
The solution of the system shown is
O (OK)
O (0,0)
O (k, O)

Answers

Answer: (0,0)

Step-by-step explanation:

The only integer"s" that both add and subtract to the same value are 0 "and" 0. Properly stated, the only integer that can be added to itself and subtracted from itself with the same outcome is 0.

Of course, k will also be 0

So this system of equation works out to be

0 + 0 = 0

0 - 0 = 0

|3d-3n|-4 if n=2 and d=3

Answers

Answer:

-1

Step-by-step explanation:

[tex]|3d-3n|-4[/tex]

Once we have an absolute value, we know that

[tex]|3d-3n| \geq 0[/tex]

[tex]\text{For }n=2 \text{ and } d=3[/tex]

[tex]|3(3)-3(2)|-4[/tex]

[tex]|9-6|-4[/tex]

[tex]|3|-4[/tex]

[tex]3-4[/tex]

[tex]-1[/tex]

бx + 8 = 50
I need that answer

Answers

Answer:

Step-by-step explanation:

Follow the steps to find the value of x
1.Addition property of equality.
1/5(x)-2/3=4/3
1/5(x)-2/3+2/3=4/3+2/3
2.Multiplicative property if equality.
1/5(x)5/1=6/3(5/1)
The solution is x=

Answers

Then you get 1/5x = 2
X= 10

Answer:

its 10

Step-by-step explanation:

I got it right

there is a box that contains a $50 bill, two $20 bills, three $10 bills and four $1 bills. If a bill is picked at random, what is the expected value?

Answers

One of the ten bills

Look at this as a fraction and break it down.
Simplify as much as possible:
-70
-28

Answers

Answer:

espera y termino y te ayudo vale que me falta poco vale

The answers is 2 wholes and 1 half.

please answer asap!!

Answers

Answer:

∠QPR = 40°

Step-by-step explanation:

According to the question the line PQ ⊥ PS which means that they both are perpendicular angles. Perpendicular angles are always 90°, so,

∠QPR + ∠RPS = 90°

=> 7x - 9° + 4x + 22° = 90°

=> (7x + 4x) +(22 - 9)° = 90°

=> 11x + 13° = 90°

=> 11x = 90° - 13°

=> 11x = 77°

=> x = 77/11

=> x = 7

So, now that we have x, we can find ∠QPR,

7x - 9°

=> (7 * 7 - 9)°

=> (49 - 9)°

=> 40°

If my answer helped, kindly mark me as the brainliest!!

Thank You!!

bob is on his way home in his car. he has driven 30 miles so far, which is three-fifths of the way home. what is the total length of his drive?

Answers

The length of Bob's drive as a fraction = 5/5

Let the length of his total drive be = x

30 miles driven by Bob as a fraction =

= 3/5 of x = 30

= 3/5x = 30

= 5/x = 30 ÷ 3 ( transposing ×3 from LHS to RHS changes ×3 to ÷3 )

=5/x = 10

= x = 10 × 5 ( transposing ÷5 from LHS to RHS changes ÷5 to ×5 )

= x = 50

Now we have to see what is =

= 2/5 of 50

= 2/5 × 50

= 100/5

= 20 miles

So , total length of Bob's drive = 30 miles + 20 miles = 50 miles .

∴ The total length of Bob's drive is 50 miles .

The angle measures of triangle QRS are given:

The measure of angle Q is (5x−15)°.
The measure of angle R is 75°.
The measure of angle S is (3x)°.
What is the value of x?

Answers

Answer:

x = 15°

Step-by-step explanation:

(5x-15) + 75 + 3x = 180

8x + 60 = 180

8x = 120

x = 15°

Use a system of linear equations with two variables and two equations to solve.

175 students enrolled in a freshman-level chemistry class. By the end of the semester, 4 times the number of students passed as failed. Find the number of students who passed, and the number of students who failed.

Answers

Answer:

35 failed and 140 passed

Step-by-step explanation:

Let p = number who passed

f = number who failed

p+f = 175

4 times the number of students passed as failed, so we need to balance this to set it equal

4f = p

Substitute this into the first equation

4r+f = 175

5f = 175

5f/5 =175/5

f = 35

Now find the number who passed

p = 4f

p = 4*35

p =140

Other Questions

field lines point out from all sides on a object. Some of the lines point into a second object nearby. Which statement best describes the objects? A. both objects are permanent magnets B. both objects are electromagnets C. the first object is negatively charged, and the second object is positively charged D. the first object is positively charged, and the second object is negatively charged Who is the founding father of modern psychology? Definition of economic costsDarnell lives in Philadelphia and runs a business that sells pianos. In an average year, he receives $842,000 from selling pianos. Of this sales revenue, he must pay the manufacturer a wholesale cost of $452,000; he also pays wages and utility bills totaling $301,000. He owns his showroom; if he chooses to rent it out, he will receive $38,000 in rent per year. Assume that the value of this showroom does not depreciate over the year. Also, if Darnell does not operate this piano business, he can work as an accountant and receive an annual salary of $48,000 with no additional monetary costs. No other costs are incurred in running this piano business.Identify each of Darnell's costs in the following table as either an implicit cost or an explicit cost of selling pianos.Implicit CostExplicit CostThe wholesale cost for the pianos that Darnell pays the manufacturer The salary Darnell could earn if he worked as an accountant The wages and utility bills that Darnell pays The rental income Darnell could receive if he chose to rent out his showroom Complete the following table by determining Darnell's accounting and economic profit of his piano business.Profit(Dollars)Accounting Profit Economic Profit If Darnell's goal is to maximize his economic profit, he( should, should not) stay in the piano business because the economic profit he would earn as an accountant would be $______. Alice drops a rubber ball from a height of 4 feet. The equation t2=4/16 represents the amount of time, in seconds, it takes for the ball to reach the ground. How long will it take the ball to reach the ground? A 1/4 second B 1/2 second C 2 seconds D 4 seconds PLZ HELP !!Max deposited $1,300 into an account that pays 4.5% interest, compounded daily. At end of six years he has a balance of ? Describe how the Roosevelt Corollary intended for the United States to interact with other countries. Explain why President Roosevelt felt it was necessary. Give an example of a time when it was used to the advantage of the US. * Which of the following statements about symbiotic relationships is true?In mutualism, neither organism benefits.At least one organism benefits from commensalism.In parasitism, both organisms are harmed.Both organisms benefit from commensalism. What is the force of a 12 kg object that is accelerating 6 m/s Describe why Canada geese migrate to meet their basic needs. What eventually happened to the colony of Roanoke? * 2 points It became very successful because they grew tobacco The Native Americans taught them how to plant crops, fish, and hunt animals It mysteriously disappeared and the colonists were never seen again The king of England recognized that Roanoke was an example of what a successful colony should be Which of the following is not a program designed to improve the American education system?Head StartNo Child Left BehindResolving Conflict Creativelynone of the above Jumping makes a frog so tired, each successive jump is 2/3 the distance of the previous hump. If a frog jumps 24 cm on its first jump, how far will the frog travel after four jumps? A student is on a skateboard facing a wall. The student and skateboard have a mass of 75 kilograms. The student pushes off of the wall with a force of 100 Newtons. What is the force of the wall pushing back on the student? What is the acceleration of the student as she moves away from the wall? Many assets provide a series of cash inflows over time; and many obligations require a series of payments. When the payments are equal and are made at fixed intervals, the series is an annuity. There are three types of annuities: (1) __________ (2)_________, and (3) __________-. One can find an annuity's future and present values, the interest rate built into annuity contracts, and the length of time it takes to reach a financial goal using an annuity. a9=6 addition equation. plz HELPPPP I BEG YOUU Machuca / dicotomas El objetivo de este documento es facilitar que todos participen y que los que tengan problemas con su wifi se enteren de lo que pierden.Escribe una escena de la peli como evidencia y luego escribe qu dicotoma representa. Finalmente, escribe una leccin que esa escena demuestra utilizando las dos partes de la dicotoma.Las dicotomas: Which of the following is a true statement?6/9 = 1/3 1/4 > 1/3 13/15 > 4/5 5/6 > 10/12 How can you use a number line to find the sum of -8 and 9? A Norman window has the shape of a rectangle surmounted by a semicircle. If the perimeter of the window is 8 ft, find the value of x so that the greatest possible amount of light is admitted. A camera has a listed price of 873.95 before tax. If the sale taxes rate is 6.5, find the total cost of the camera with sales tax included. Round your answee to the nearest cent. As necessary.