the average mark of three pupils are 68. what is the ratio of 5:4:3. how many marks did the best student get? HELP ME! ​

Answers

Answer 1

Answer:

85, 68, 51

Step-by-step explanation:

Average: The sum of all the numbers divided by the number of numbers

If the ratio of the scores is 5 : 4 : 3, let's just set it as 5x : 4x : 3x

Then using the definition of an average, we can write this equation.

(5x + 4x + 3x) / 3 = 68

Multiply both sides by 3.

5x + 4x + 3x = 68 * 3

Simplify.

12x = 204

x = 17

Now, substitute x = 17 into the original scores (5x, 4x, and 3x)

5x = 5 * 17 = 85

4x = 4 * 17 = 68

3x = 3 * 17 = 51

Just in case, let's check this answer. Find the average of the 3 test scores.

(85 + 68 + 51) / 3 =

204 / 3 = 68

Thus, the answers are correct


Related Questions

I need help asap thank you

Answers

Answer:

A) it's positive

B) 37/30 or 1 7/30

Step-by-step explanation:

2 PART QUESTION

Consider the number 0.101001000100001…




1)
Which choice correctly describes the given number?
A) terminating
B) repeating
C) rational
D) irrational


2)
Which statement correctly classifies π as rational or irrational?
A) Rational because it equals 22/7
B) Rational because it equals 3.14.
C) Irrational because it has its own symbol.
D) Irrational because it doesn't equal a terminating or repeating decimal.

Answers

Answer:

1) irrational

2) is A.

Step-by-step explanation:

you're welcome

The required solution is as follows,
(1) the given number is an irrational number. Option D is correct.
(2)  π is an irrational number. Option D is correct.

What is rational number?

Rational numbers are numbers that can be structured in the form of the fraction of integers. Eg- 5/6, 2/3 etc.

Here,
(1)

Given number,
0.101001000100001…
Since the given number has repeating decimals so, it is an irrational number.

(2)
π
Since π also an irrational number, because it value, is nonterminating and repeating.

Thus, the required solution is as follows,
(1) the given number is an irrational number. Option D is correct.
(2)  π is an irrational number. Option D is correct.

Learn more about Rational numbers here: https://brainly.com/question/17450097

#SPJ2

108 divided by 2 1/2

Answers

Answer:

43.2

Step-by-step explanation:

first turn 2 1/2 into an improper fraction

(2 × 2) + 1 = 5

5/2

then turn 5/2 into a fraction

5 ÷ 2 = 2.5

now divide!

108 ÷ 2.5 = 43.2

Number equivalent to 108/2 1/2 is 43.2 .

Given,

108 divided 2 1/2

Using division property,

The rules for division are:

(1) positive × or ÷ positive = positive

(2) positive × or ÷ negative = negative

(3) negative × or ÷ negative = positive

Rule for long division method,

Divide the tens column dividend by the divisor.

Multiply the divisor by the quotient in the tens place column.

Subtract the product from the divisor.

Bring down the dividend in the ones column and repeat.

Therefore,

divide, multiply, subtract, bring down and repeat or find the remainder.

Here the required value is of :

108/2 1/2

= 108 / (5/2)

= 43.2

Hence the answer is 43.2

Know more about division,

brainly.com/question/10703980

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can someone help me with algebra? i'm lost on everything. i'm a junior in high school.

Answers

Answer:

i can.

Step-by-step explanation:

Bernie bought a pair of shoes at the store when they were having a 30% off sale. If the
regular price of the pair of shoes was $42, how much did Bernie pay?
A) $12.60
B) $29.40
C) $24.00
D) $15.30

Answers

It’s $12.60 dollars!!!

Mr. King divides his entire class into 8 stations. He assigns 4 students to each station. How many students are in the class?

Answers

Answer:

32 students are in the class.

Step-by-step explanation:

8 * 4 = 32

Hope this helped! Have a nice day! Plz mark as brainliest!!! :D

-XxDeathshotxX

Answer:

32

Step-by-step explanation:

8 multiplied by 4

In many cities, when someone doesn't pay off an entire fine, the city will add a monthly fee until they do. Watch the video from Last week tonight with john Oliver. Then, imagine Ali gets a $150 ticket for speeding. This time, though, the city adds a $35 fee every month until the ticket is fully paid. Use the table and graph to show what the fine will be, and how much Ali will have saved, after each month. How long will it take to pay off the ticket, and how much will it end up costing in total?
Information : Ali makes $50 in savings a month. Also i need the months of the fee and ali to go up to 12 months. thank youuu

Answers

In many cities, when someone doesn't pay off an entire fine, the city will add a monthly fee until they do. Watch the video from Last week tonight with john Oliver. Then, imagine Ali gets a $150 ticket for speeding. This time, though, the city adds a $35 fee every month until the ticket is fully paid. Use the table and graph to show what the fine will be, and how much Ali will have saved, after each month. How long will it take to pay off the ticket, and how much will it end up costing in total?

your friends show you a coin collection .in it 45/50 of the coins are quarters.what percent of the coins are quarter

Answers

Answer:

90%

Step-by-step explanation:

45 : 50

45 / 50 = 0.9

0.9 x 100 = 90

Answer: 20%

Step-by-step explanation:  i learned this in mexico class

Easy question!!! Solve for x.

Answers

Answer:

3

Step-by-step explanation:

Answer:

3

Step-by-step explanation:

yes

what is 72% of 250? I need help I have a d in math

Answers

Answer:

180

Step-by-step explanation:

72% of 250

72% x 250

72/100 x 250 = 180

I hope im right!!

The answer is 180
72/100*250= 180

6. How many solutions does the system 2y = 10x - 14 and 5x - y = 7 have? B two C none A one D infinitely many​

Answers

Answer:

D infintely many

Step-by-step explanation:

These equations have the same slope and same y-intercept making them the same exact line/equation

Will give brainiest to correct answer

20a + 32

Answers

Answer:

wouldn't it just be the same? It would still be 20a+32

Answer:

4(5a+8)

Step-by-step explanation:

Factor 20a+32

20a+32

=4(5a+8)

helpppppp for 10points !!!​

Answers

slope is x so it’s -1/5
pretty sure
haven’t done this in a year

Answer:

[tex] - \frac{1}{5} [/tex]

the area of a Trapezium is 132 cm². Its height is 14 cm the larger parallel side is longer than the other by 16 cm. find the length of the parallel side. Please someone help!!

Answers

1/2 (a+b)h

1/2 (a+16)14=132

8×14=112

14÷2=7

132-112=20

20÷7 =2.857142857

so then a= 2.86 (3sf)

For more questions like that turn it into equation the make a subject of formula

A rectangular playground has a width of 54 feet and a length of 81 feet. Martina makes a scale model of the playground using a scale of 1 in:3 ft.

What are the dimensions of Martina’s scale model?

Answers

Answer:

72 and 108

Step-by-step explanation:

540/30= 18 *4 = 72

and

810/30= 27*4=108

Emily has 6 gallons of water josh has 23 quarts of water. How many more points does Emily have more than josh

Answers

Answer:

2 pints

Step-by-step explanation:

To determine the amount of pints that Emily has more than Josh, gallons and quarts have to be converted to pints and the value is then subtracted

1. Convert gallons and quarts to pints

1 gallon = 8 pints

6 gallons = 8 x 6 = 48 pints

1 quart = 2 pints

23 quarts = 2 x 23 = 46 pints

2. Determine the difference in the amount of pints Emily has and the amount Josh has

48 pints - 46 pints = 2 pints

round 1,073 to the nearest thousand

Answers

Answer:

1000

Step-by-step explanation:

round up if 5 or bigger

round down if less than 5

Ron made 2/3 of a quart of hot chocolate. Each mug holds 1/3 of a quart. How many mugs will ron be able to fill ? show work

Answers

Answer:

2 mugs

Step-by-step explanation:

He made 2/3rds quarts of hot chocolate, and needs to fill 1/3 quart mugs.

2/3 ÷ 1/3 = 2

1. Find the slope and the y-intercept
of the graph of the linear equation.
y = -7x + 2
1
A) slope: -1/7; y-intercept: 2
B) slope: 1/2; y-intercept: -7
C) slope: -7; y-intercept: 2
D) slope: 2; y-intercept: -7

Answers

Answer:

the answer is C..................

Sheryl has a recipe for pasta with
vegetables. The recipe calls for
130 grams of vegetables and twice as
much pasta as vegetables. What is the
total mass in grams of the recipe?

Answers

Answer:

The Anwser Is 390 Because Add It All Up And You Got The Anwser

Answer:

390

Step-by-step explanation:

130 and then twice as much pasta, 130+130=260

Then add the vegetables: 130+260=390

390 is the total mass in grams

which two graphs pass through the point (3, 7)

Answers

Answer:

kissssssssssssssssssseeeeesssssssses

A and f

Hope this helps!!!

What is the solution of the system of equations shown in the graph below?

Answers

Answer:

The point on the plane (4, 2)

That is x = 4 and y = 2

Step-by-step explanation:

Look for the point where the two lines given by the system of linear equations  intersect. That point is (4, 2)

x = 4 and y = 2

Katy buys 2 DVDs every 2 weeks. How many DVDs will she buy in 14 weeks?
A. 28
B. 4
C. 56
D. 14

Answers

D. 14

Hope this helps :P
I think the correct answer is D.14

Help me Please I will give brainliest! (please dont answer if you dont know)

Answers

Answer:

16.5 feet or

about 17 feet long.

Step-by-step explanation:

A = bh

Squares have equal side lengths all around so with there being 4 sides, you will take 66 and divide by 4.

66 ÷ 4 = 16.5

So it is about 17 feet

Help Please 5 Stars and brainliest

The results of a study exhibit response bias. Select the statement that best describes the bias in the study. *

OThere were not enough subjects who chose to respond to a survey that was sent as part of the study.
O The interviewer for the study was the boss of the subjects.
O The interviewer for the study did not record the responses of the subjects accurately.
O There was a significant amount of people who declined to participate in the study.​

Answers

Answer:

the last one

Answer:

the answer is c

Step-by-step explanation:

Help with this please

Answers

Since the inequality has a “>” the plot must be hallow. So it leaves you with either C or D. Hope that helps narrow down your options.
I think the answer is D hopefully i’m right

If you want to bowl six games which ally is better show work

Answers

Answer:

Pinz

Step-by-step explanation:

So to set up the equation for Lanez:

y = 3.5 + 4.25x

Next we compare the prices for both overall by plugging 6 games in as x:

Lanez:

y = 3.5 + 4.25(6)

y = 3.5 + 25.5

y = 29

Pinz:

y = 3.75 + 4(6)

y = 3.75 + 24

y = 27.75

29>27.75

Lanez is more expensive with it costing $29 for a night as opposed to the $27.75 one would pay to play at Pinz.

a) BCD is a straight line.
Triangle ABC is equilateral.
CE = DE
E
Not drawn
accurately
А
320
B
С
Work out the size of angle x.
(4)​

Answers

Answer:

x = 46°

Step-by-step explanation:

Since Δ ABC is equilateral then interior angles = 60°

Since CE = DE then Δ CDE is isosceles and the base angles are congruent, so

∠ ECD = [tex]\frac{180-32}{2}[/tex] = [tex]\frac{148}{2}[/tex] = 74°

BCD is a straight line, then the 3 angles on it sum to 180°, that is

60° + 74° + x = 180°

134° + x = 180° ( subtract 134° from both sides )

x = 46°

3w+16>6+4w

I’ll mark brainless

Answers

Answer:

w<10

Step-by-step explanation:

 I am really tired and I dont feel like showing all my work, unless you want me to then just ask

Answer:

3w+16=0>6+4w=0

3w=-16>4w=-6

w=-16/3>w=-6/4

w=-16/3>w=-3/2

Members of a baseball team raised $1479.25 to go to a tournament. They rented a bus for $800.50 and budgeted $45.25 per player for meals. Write and solve an equation which can be used to determine pp, the number of players the team can bring to the tournament.

Answers

Answer:

15 players

Step-by-step explanation:

First, you might want to exclude out how much it cost to rent a bus.

1479.25 - 800.50 = 678.75

After that, the remaining amount of money is how much money is spent altogether for the basketball player's meal, since each player had the same budget for the meal, it made the question easier.

678.75 ÷ 45.25 = 15

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