1/7 of all students achieved great success in the written exercise in mathematics. 3/7 very good success. 2/7 good success, while 4 students achieved sufficient success. How many students did the writing exercise?(fractions)​

Answers

Answer 1

Answer:

x = 28

Step-by-step explanation:

Let the total number of students = x

x/7 + 3x/7 + 2x/7 + 4 = x If that is all there is.  If it isn't the problem can't be done. Combine like terms.

x(1 + 3 + 2)/7 + 4 = x

x (6/7) + 4 = x                       Subtract 6x/7 from both sides

4 = x - 6x/7

4 = 7x/7 - 6x/7                     Combine

4 = 1/7x                                Multiply both sides by 7

4*7 = 7x / 7

x = 28


Related Questions

HELP ME! consider the scatter plot. select true or false for each statement. statement true false

the scatter plot shows no association. true – the scatter plot shows no association. True or false? as the x-values increase, the y-values decrease. true or false?

Answers

The scatter plot shows no associate - false

As the x-values increase, the y-values decrease - true

Help please! The questions are the image

Answers

Answer:

you have to use set square and answer this all

HCF and LCM questions​

Answers

HCF and LCM Questions

Responses:

6. (i) 27

(ii) 4 rose stalks, 3 lily stalks, and 2 orchid stalks

7. After 18 minutes

8. (i) May 7th

(ii) Every 12 days

How can the HCF and LCM be used to find the right responses?

6. The number of stalks of roses = 108

Number of stalks of lilies = 81

Number of stalks of orchids = 54

(i) The largest number of baskets that can be packed is given by the

Highest Common Factor, GCF , or HCF,  of  108, 81, and 54, which is

found as follows;

54 = 2 × 27

81 = 3 × 27

108 = 4 × 27

Therefore;

The HCF of 108, 81, and 54 is 27

Which gives;

The largest number of baskets that can be packed = 27

(ii) From the above factors, we have;

Number of rose stalks per basket = 4Number of lilies per basket = 3Number of orchids per basket = 2

7. Length of the circular path = 1 km. = 1,000 m.

Time Lixin takes to walk one round = 18 minutes = 1,080 seconds

Time Khairul takes to run one round = 360 seconds

Time Devi takes to cycle 2 rounds = 4 minutes

Therefore;

Time Devi takes to complete 1 round = [tex]\frac{4}{2}[/tex] = 2 minutes = 120 seconds

Required:

The time at which the three of them will next meet at the starting point

Solution:

The time at which they meet at the starting point is given as the lowest

common multiple, LCM of 1,080, 360, and 120, which is given as

follows.

1,080 = 360 × 3

1,080 = 120 × 9

1,080 = 1,080 × 1

Therefore;

The LCM of 1,080, 360, and 120 is 1,080

The time they will next meet at the starting point is after 1,080 seconds which is 18 minutes

8. The days off of Nora = Every 4 days

Days off for Amirah = Every 6 days

Nora's last day of = 29 April

Amirah's last day off = 1 May

(i) The next time they will both have the same day off is given as follows;

6·x = 2 + 4·x

2·x = 2

x = 1

Therefore, the next time Amirah has a day off, which is 1 May + 6 days = 7 May, they will both have the same day off.

They will both have the same day off on May 7

(ii) The number of days that it will take for them to have the same day off is given by the HCF of 4 and 6, which is every 12 days.

Learn more about LCM and HCF here:

https://brainly.com/question/20293084

https://brainly.com/question/14387448

a) (i) Write down the value of x.
(ii) Give a reason for your answer.
b) (i) Write down the value of y.
(ii) Give a reason for your answer.
c) Work out the size of angle z.​

Answers

Answer:

see explanation

Step-by-step explanation:

x = 65° ( vertically opposite angles )

y = 71° ( alternate angles )

The sum of the 3 angles in a triangle = 180° , then

x + y + z = 180° , that is

65° + 71° + z = 180°

136° + z = 180° ( subtract 136° from both sides )

z = 44°

So x = 65°, y = 71° , z = 44°

Find x in this proportion.
16 = X
x. = 4
O 64
O 16
O 32
8

Answers

Answer:

32

Step-by-step explanation:

16/x = x/4, then cross multiply:

16 times 4 = 64

x times x = 2x

64 = 2x

/2 /2

32 = x

hope this helps!

this question is very confusing are u trying to find the proportion of Find x in this proportion.

16/x = x/4 if so the answer is 8

Step-by-step explanation: because 16 divided by 8 is 2 and 8 divided 4 is 2

2. What is the slope of the line through
the points (-5, 7) and ({0,-2) ?

Answers

Answer:

-9/5

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(-2-7)/(0-(-5))

m=-9/(0+5)

m=-9/5

I need help plssssss​

Answers

Answer:

i cant see the image?

Step-by-step explanation:

if someone can please tell me what is shows

Daniel got in his car at 2:15 P.M. and started driving toward his grandmother's house. After driving for 2 hours and 31 minutes, Daniel took a break for 1 hour and 16 minutes to have a snack. Then Daniel drove for 2 hours and 54 minutes and arrived at his grandmother's house. What time was it when Daniel arrived at his grandmother's house?

Answers

2:15+2:31=4:46
4:46+1:16=5:62=6:02
6:02+2:56 =8:56pm or 20:56

what is -7+4m+10=15-2m=

Answers

Answer:

m=2

Step-by-step explanation:

Add the numbers

-7+4m+10=15-2m

3+4m=15-2m

Rearrange terms

3+4m=15-2m

4m+3=15-2m

Rearrange terms

4m+3=15-2m

4m+3=-2m+15

Subtract 3 from both sides of the equation

4m+3=-2m+15

4m+3-3=-2m+15-3

Simplify

4m=-2m+12

Add 2m to both sides of the equation

4m=-2m+12

4m+2m=-2m+12+2m

Simplify

6m=12

Divide both sides of the equation by the same term

6m = 12

6m/6 = 12/6

Simplify

m = 2

f(x)=50x^4+3x^3-10x^2x^7-100
standard form pls

Answers

I think this is the answer

Can you help me!!!!!!!!

Answers

Answer:

Yes, this is A Linear Function!

Step-by-step explanation:

This is a linear function beacuse linear functions are straight lines on the graph as you may know. So when we graph these numbers it turns up as a straight increasing linear line.

(I attached a pic for u)


Hope this helps!

<3 me if it did!

The equation of a circle is pi(2x+3)^2
What is the least possible integer value of x for the circle to exist? Please explain.

Answers

Answer: x = -1

Step-by-step explanation:

The radius needs to be positive, so 2x + 3 > 0.  Solving for x, we get x > -3/2.  The smallest integer larger than -3/2 is -1, so x = –1.

do any of you guys have an idea how to do this?​

Answers

It would be the last one


Explanation

A vowel out of apple so they are two vowels in apple out of 5 letters so that’s 2/5

And there are two consonants in the word book all that’s 2/4

2/5 + 2/4 = 4/9

What is the fastest why to learn multiplication??

Answers

Answer:

cheating that's what i do

Step-by-step explanation:

Answer:

Make problems get more complicated overtime

PLEASE HELP! PHOTO ATTACHED!

Answers

Answer:

328 yards

Step-by-step explanation:

What is X equal to? It’s not 180 -.-

Answers

Answer:

x = 163

Step-by-step explanation:

(x-5)+22= 180

x = 143

hope this helps!!!

Answer:

x = 163

Step-by-step explanation:

It is 180 and there is no doubt in it. a straight line always measures 180 and this is a straight line not even curved

to find the value of x

x - 5 + 22 = 180

x + 17 = 180

x = 180 - 17

x = 163

we can even cross check

163 - 5 + 22

158 + 22

= 180

if the line wasn't 180 I wouldn't able to cross- check

The length of a rectangle is 12 cm and the width is w. Which expression would calculate the perimeter of the rectangle?

Answers

Answer:

Perimeter = 2w+24cm

Step-by-step explanation:

12cm

w w

12cm

2x12=24

wx2= 2w

P=2w+24cm

4 is subtracted from five-sixths of w

Answers

Step by step

One sixth of the sum 1/6 ( + )
the sum of d and 3 1/6 (d+3)
minus the product 1/6 (d+3) - ( )( )
The product of 4 and q 1/6 (d+3) - 4q

The product of p and 3 3p
is subtracted from - 3p
three-fourths of s 3/4 s - 3p

three-fourths the sum 3/4 ( + )
the sum of 9 and k 3/4 (9+k)


Obviously, the final line in each case is the answer.
One sixths because 5-4=1 hope this helps

A clothing store is having a sale on shoes of 40% off the original price. They have not marked the new price on any of the shoes. Write an equation that you could use to determine the price of a pair of shoes sold by the store if you know the original price. Use x to represent the original sale price and y to represent the sale price.

Answers

Answer:

x * 0.60 = y

Step-by-step explanation:

0.60 because 100% - 40% =60% 60%=0.60

Pls help, i will give someone a brainlest!

Options:
Kayla
joshua

Answers

Answer:

Kayla

Step-by-step explanation:

A slope of 0 is a horizontal line

Answer:

Kayla would be correct in this problem

Marcos has 16 in savings at the beginning of a month he then divided to save 8 every week

Answers

I think the answer is 2.

I do not know how to do this.

Answers

Answer:

Step-by-step explanation:

(a) Option B cost less at 120 miles driven

The cost difference at 120 miles between option A and option B is $15

(b) Option A and B cost the same at driving 60 miles.

Option B would cost more if you drive less than 60 miles.

What is 80% of 60? Help meeeee

Answers

Answer:

48

Step-by-step explanation:

Divide 60 by 100 to get 1% of 60.

0.6

Multiply 0.6 by 80 to get 80%

48

48 is 80% of 60.

Answer:[tex]48[/tex]

Step-by-step explanation:

What is 80% of 60?

To get the answer,

First, convert the percentage to decimal form. How? Change the percent sign to decimal point. Then, move the decimal point two (2) places towards the left side of 80. It looks like this:

[tex]80 / 80.[/tex]

[tex]80. 80[/tex] decimal point moves two places to the left

Therefore, 80% is equal to 80 .

Then, let's solve!

Multiply  60 by  0.80 to get the answer.

60x0.80=48

From here, we get to know that the 80% of 60 is 48.

In a right triangle has one leg that measures 11 in and the hypotenuse measures 47 in, what is the length of the other leg?

Answers

Using the Pythagorean theorem:


47 ^2 = 11^2 + x^2

2209 = 121 + x^2

Subtract 131 from both sides

2088 = x^2

Take the square root of both sides

X = sqrt(2088)

Simplify

X = 6sqrt(58)

write the equation of the line in slope intercept form given the slope is -6 and the y-intercept is -3

A. y=-3x-6
B. y= -6-3x
C. y= -6x-3
D. y=-6x+3

Answers

Answer:

C) y = -6x-3

Step-by-step explanation:

y = mx + b

the m is the slope and the b is the y intercept

PLEASE HELP IM SO BEHIND!! I"LL GIVE BRAINLEST

A movie collection has 6 mystery, 10 comedy, 4 adventure, 9 drama, and 12 science fiction discs. How many 5-disc combinations can be made from the collection? (Hint: Divide the total combinations by 5.)




5,184 combinations


6,480 combinations


12.960 combinations


8,640 combinations

Answers

Using the combination formula, it is found that 749,398 5-disc combinations can be made from the collection.

The disks are chosen without replacement, hence the combination formula is used to solve this question.

What is the combination formula?

[tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by:

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

In this problem, 5 disks are taken from a set of 6 + 10 + 4 + 9 + 12 = 41 disks, hence:

[tex]C_{41,5} = \frac{41!}{5!36!} = 749398[/tex]

749,398 5-disc combinations can be made from the collection.

You can learn more about the combination formula at https://brainly.com/question/25821700

Which statement best describes the equation (x 5)2 4(x 5) 12 = 0?.

Answers

Answer:

Option 1 is correct.

Step-by-step explanation:

Given the equation

we have to choose the best statement describes the above equation.

→ (1)

As, the highest degree of its monomials i.e individual terms with non-zero coefficients is 2.

⇒ Degree of above equation is 2.

hence, the given equation is quadratic equation.

The general form of quadratic equation is

In variable u: → (2)

Now, compare equation (1) with (2), we say that

The equation is quadratic in form because it can be rewritten as a quadratic equation with u substitution u = (x + 5).

Option 1 is correct.

Find the slope of the line that passes through the points (9, -2) and (4, 3)

Answers

Answer:

-x aka -1

Step-by-step explanation:

x1   y1     x2   y2

9   -2       4   3  

m= y2 - y1/x2 - x1

m = 3 + 2/4 - 9

(The "-" sign turned positive because it is negative times negative)

5/-5

Simplify: 5/-5 = -1 = -x

The slope of this line is -x

you ate 4 popsicles out of a box which is 20% of the box how much is in the whole box


Best answer will get brainliest

Answers

This question basically asks:

4 is 20% of what

So, just multiply everything by five so you turn that into

100% is 20

4 is indeed 20% of 20

Answer:

There is 20 total

Step-by-step explanation:

every 20% is 4, so you add 4 till you get 100%

How can a figure be a rectangle, a rhombus and a square?.

Answers

Answer: It has 4 equal sides

Step-by-step explanation:  A rectangle with 4 equal sides is a square.

So, a rectangle is a rhombus when it is a square!

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