Examen Compétence 1: Proportions et algèbre
1.
Dans un camp de jour, Marc essaie de te faire deviner le nombre d'élèves qu'il a
dans ses deux groupes. Dans le groupe A, le rapport entre les gars et les filles
est de 3:5 et celui du groupe B est de 2:3. Il y a 62 élèves en tout et il y a autant
de garçons dans le groupe A que dans le groupe B. Combien y a-t-il d'élèves dans
le groupe B?
Considérez qu'il y a "x" garçons dans chaque groupe et résolvez l'équation
algébrique.

Answers

Answer 1

Answer:

Check my link.

Step-by-step explanation:

Brainly keeps on saying my question either has a link or is inappropriate, and it neither has a link nor is inappropriate.

I have no clue as to what to correct.


Related Questions

What is the value of the expression ix0i1xi2xi3xi4?

Answers

Answer:The answer is - 1.

Step-by-step explanation:

ignore the answer chosen but does anyone know the answer to this pls asap!!

Answers

Answer:

The diagonals bisect each other

Step-by-step explanation:

2s = 10    s+5 = 10      FJ = JH

t+12 = 18   3t = 18    EJ = JG

Calculate the value of the expression.

60 - (-80)

Answers

Answer:

140

Step-by-step explanation:

60 - (-80) = 60 + 80

Answer: It’s 140
Hope this helped!

WILL GIVE BRAINLIEST IF YOU GIVE AN ACCURATE DESCRIPTION!! ( look at photo)

Answers

Answer:

∠1 and ∠5 are pair of corresponding angles

∠1 and ∠8 are pair of alternate exterior angles

∠3 and ∠6 are pair of alternate interior angles.

Step-by-step explanation:

we need to identify the pair of corresponding angles, a pair of alternate exterior angles and a pair of alternate interior angles.

1) Pair of corresponding angles

Angles that are at the same corner at each intersection.

So, ∠1 and ∠5 are pair of corresponding angles

2) Pair of alternate exterior angles

A pair of angles that are on outer side of the two lines but on opposite sides of the transversal.

So, ∠1 and ∠8 are pair of alternate exterior angles

3) Pair of alternate interior angles

A pair of angles that are on inner side of the two lines but on opposite sides of the transversal.

So, ∠3 and ∠6 are pair of alternate interior angles.

Yesterday, Jack drove 35 1/2 miles used 1 1/4 gallons of gasoline. What is the unit rate for miles per gallon?

Answers

Answer:

28.4 miles/gallon

Step-by-step explanation:

to find the answer, you need to find the constant by dividing the miles drove by the amount of gasoline (or the other way around in terms of wording if it is not correct grammar) So you need to do 35.5/1.25 .  FYI I converted the fraction to decimal. The answer is 28.4 miles/gallon.

Hope this helped!! :)

Can someone please help me with B it’s a 1 Mark question!!!!!!!!!!!HELP

Answers

Answer:

137°

Step-by-step explanation:

Basically, its the reverse of question 1.

With angle x, you can find out that the opposite angle is 360 - 106 = 254°

the angle is twice the size of angle y as said in the corcle theorems.

254 divided by 2 = 137°

(please correct me if im wrong, i feel like im missing something)

Yeah that one is right

Solve and describe the graph of the inequality: 5x < 45

Answers

Answer:

5x<45 Divide both by five which results in the equation looking like this:x<9. On a number line, there would be an open circle on the nine and the arrow would go to the left.

Step-by-step explanation:

The solution set is x<9 of inequality 5x<45.

What is an inequality?

A relationship between two expressions or values that is not equal to one another is referred to as "inequality" in mathematics.

To solve the inequality, you may multiply or divide each side by the same positive number, add the same amount to each side, take the same amount away from each side, and more. You must flip the inequality sign if you multiply or divide either side by a negative number.

5x<45

divide by 5

x<9

The graph is the shaded region below x =9.

Therefore, the solution set is x<9. And the graph is given.

To learn more about the inequality in mathematics;

brainly.com/question/28823603

#SPJ2

NEED HELP ASAP!!!!!!!!!!

Answers

Answer:

the question is missing

Step-by-step explanation:

Answer:

with what? there is nothing attached.

There are 7 boxes stacked on the floor in the math department supply closet. Each box has a height of 10 inches or 8 inches. The height of the stack of 7 boxes is 5 feet. How many boxes in the stack are 8 inches in height?

Answers

Answer:

5 of the 7 boxes are 8 inches in height

Step-by-step explanation:

Mathematically;

1 ft = 12 inches

So, 5 ft will measure 5 * 12 = 60 inches

So from what we have ,

We want to combine 8 and 10 inches to give 60 inches total

Let the number of 10 inches be x and the number of 8 inches be y

Mathematically;

x + y = 7 •••••(i)

10x + 8y = 60 ••••(ii)

From equation i, x = 7-y

Put this in equation ii

10(7-y) + 8y = 60

70-10y + 8y = 60

70-60 = 10y-8y

2y = 10

y = 10/2

y = 5

Which of the following expression is a perfect square?
A. 4x
B. 4x2
C. 6x4
D. 8x

Answers

B because it is (2x)(2x) which is equal to 4x^2

Ruby’s homework covers multiplication with the powers of 10 the first question on her homework is 82.6 x 10 to the power of 2 what is the value of expression?

Answers

Answer:

826

Step-by-step explanation:

82.6 x 10 to the power of 2 :

8.26 * 10^2

8.26 * (10 * 10)

8.26 * (100)

= 826

HELP!!

Find the solution of this system of equations
x - y = 4
- 10x + y = -58

Answers

Answer:

Step-by-step explanation:

given: x-y = 4

x=4+y

given: -10x + y = -58

plug in for x

-10(4 + y) + y = -58

-40 - 10y + y = -58

-9y = -18

y = -18 / -9

y = 2

now plug in 2 for y in the first equation

x-2=4

x=6

There is the solution  x=6, y=2  :)

which is the graph of f(x)= 3 sq root -x?

Answers

Answer:

3rd option. The way you do it is just plug in negative x value let's say -8, plug it in then y would be a positive value. So that rules out first two options. Then plug in positive x value, y would be negative.

what is the reciprocal of 3/ 8 in a b form

Answers

Answer:

8/3

Step-by-step explanation:

Help easy math problems!!!!

Answers

Answer:49.45

Step-by-step explanation:

(04.01)Which unit rate is equivalent to 15 miles per gallon?

thirty miles over three gallons
three gallons over thirty miles
four gallons over sixty miles
sixty miles over four gallons

Answers

Answer:

Basically, it is asking what fraction equals 15 / 1 ?

And the answer is 60 miles / 4 gallons

Step-by-step explanation:

It costs Linus a processing fee of $45 to set up a new cell phone account with AT&T plus $65 per month for the cell phone plan. His sister, Lucy, also wants to use the cell phone to call her friends each month. Lucy agrees to pay Linus $15 towards the processing fee and tells him she will pay $20 per month.

Define a variable.

Write an expression that represents how much Linus will have to pay for the cell phone if Lucy contributes.


Determine how much Linus will pay if he has the cell phone for 6 months.

Answers

Answer: 110-35=x

answer: 7 minutes

I came here to find the answer to this proble but since no one answered I’ll just put the answer that I got.

Step-by-step explanation:

what is 3 / 1 - 1/2
[tex] \frac{3}{1 - \frac{1}{2} } [/tex]
I need help i have an exam on the 8th of Januaryary 2021 i need this because i will get me into highschool..​

Answers

Answer:

6

Step-by-step explanation:

3 / 1 - 1/2 = 3 / 1/2

when dividing by singular fractions (1/3 1/6 1/29 whatever) just multiply by the denominator so 3 ÷ 1/2 = 6

Solve please: 7(3x+1)=35

Answers

Answer:

x=

Step-by-step explanation:

PEMDAS:

35/ 7

3x+1 = 5

3x= 4

x= 4/3

Answer: x=4/3

Step-by-step explanation:

1. Distribute

7(3x+1)=35

21x+7=35

2. Subtract 7 from both sides of the equation

21x+7=35

21x+7-7=35-7

3. Simplify

Subtract the numbers

Subtract the numbers

21x=28

4. Divide both sides of the equation by the same term

21x=28

21x/21 28/21

5. Simplify

Cancel terms that are in both the numerator and denominator

Divide the numbers

x=4/3

There are 5 ten-pound bags and 8 twenty-pound bags of rice on a shelf. How many pounds of rice are on the shelf?
Group of answer choices

Answers

Answer:

(8×20)+(5×10)=210

8×20=160

5×10=50

Step-by-step explanation:

5 ten pounds would be 50 pounds. Just count by 10s and you get 50. 8 twenty pound bags would be 20x8 and it =160. Add 160 and 50 and you get 210. Hope this helps you! It’s a easy question once you get the hang of it. Keep trying!

Luke ate a snack with 91 total calories. If the chips he ate were 41.2 calories, how many calories were in the rest of his snack?

Answers

Answer:

49.8

Step-by-step explanation:

91-41.2

Sophie buys eggs and apples at the store.
She pays a total of $22.11.
She pays a total of $4.29 for the eggs.
She buys 3 bags of apples that each cost the same amount.

Write and solve an equation which can be used to determine x, how much each bag of apples costs.

Answers

(22.11 - 4.29) /3 = X

22.11- 4.29 = 17.82

17.28/3 = 5.94

One bag of apples cost $5.94

Answer:

(22.11-4.29)÷3=x

(17.82)÷3=5.94

x=$5.94

The greatest number of bat bags the coach can buy with $605 is
Choose...(10,11,12,13) .
She needs to buy
Choose...(10,11,12,13)
bat bags. The coach
Choose...(does not, does.)
have enough money to buy a bat bag for each player.

Answers

Answer:

11

12

does not

Step-by-step explanation:

If we know how much money the coach has and how much each bag costs we can find out how much bags the coach can by by divide the money the coach has by the price of one bat bag. So we do....

605 / 55 = 11

So now we know that she can by 11 bags maximum, while she needs 12 bags for the team. From this we know that she does not have enough money to buy 12 bags.

which expression is not equivalent to the other three
2x+2+ + 3× -8
4 + 7× - 2
-2 + 5× + 2× - 4
8× - × - 6​

Answers

Answer:

-2+5x+2x-4

Step-by-step explanation:

-2+5x+2x-4 is the answer good luck





CHALLENGE Sara had some marbles. She got 20 more marbles for her
birthday, and she got 30 marbles at the store. Now Sara has 100 martha
marbles did she have to start?


Answers

Answer:

50

Step-by-step explanation:

a + 30 + 20=100

100-30=70

70-20=50

Answer: 50 marbles

Step-by-step explanation: 100-(30+20)=50

How are the areas of triangles and parallelograms in the coordinate
plane calculated?

Answers

Answer:

___________________________________________________________

By finding the product of a point's x coordinate times the next point's y coordinate, then subtracting the y coordinate of the first point times the x coordinate of the second coordinate and dividing by two, you will find the area of the polygon.

___________________________________________________________

1\2 ÷ 1\2 i dont know the please help

Answers

Answer:

I think 1/2 divided 1/2 is equal to 1

Step-by-step explanation:

I put in into the calculator and it said 1

It’s is 1 because it is simple

simplify as a monomial 84a^4/-42

Answers

[tex] \frac{ {84a}^{4} }{ - 42} [/tex]

[tex]-2 {a}^{4} [/tex]

2.20E17 in kilograms

Answers

Answer:

2.20E17 is 220,000,000,000,000,000 kg

Can any one help me if x={a,b,c,d},A={b,c,d}andB={b,d,a,c}which one is the proper subject of X?

Answers

Answer:

Set A is the proper subsets of X and not Set B since set B has all the elements of set X

Other Questions
help, I will mark if you're correct Luke ate a snack with 91 total calories. If the chips he ate were 41.2 calories, how many calories were in the rest of his snack? Solve and describe the graph of the inequality: 5x < 45 The difference of five times a number and 6 totals 29 How did Republicans ensure Southern states reformed during Reconstruction?A.They gave Southern states money to rebuild their roads and bridges. B.They forced Southern states to rewrite their constitutions to include voting rights for all. C.They placed Southern states under military occupation.D.They restricted trade until Southern states met all requirements for statehood. Please help Calculate the value of the expression.60 - (-80) What color would match aquamarine? #freepoints can someone explain this to me? (04.01)Which unit rate is equivalent to 15 miles per gallon? thirty miles over three gallons three gallons over thirty miles four gallons over sixty miles sixty miles over four gallons change the following sentence into passive voice - she offered me a lift What work of art, music, science, mathematics, or literature has surprised, unsettled, or challenged you, and in what way? Which of the following lists identifies organisms that are producers in food webs?(20 points and multiple choice)A. algae, grass, sunflowersB. mushrooms, bacteria, earthwormsC. termites, fleas, ticksD. grasshoppers, lichen, venus fly traps Name two luminous objects other than the Sun Who did Cyrus defeat and return the follower of Yahweh to Jerusalem Read the excerpt from Frida Kahlo by Hedda Garza.Despite her pessimism, Kahlo's love of life prevailed. Her broken bones healed, and her spirits improved when she was able to leave her bed and walk. Still in pain and limping, Kahlo decided not to return to school. "I felt I had energies for anything except studying to become a doctor," she wrote in one of her many notes to Gmez.What does the underlined phrase indicate about the author's feelings toward Frida Kahlo?The author believes that Frida was pessimistic, which made it difficult for her to heal.The author believes that Frida was foolish and should not have left school.The author believes that Frida was strong, even in the face of pain and disappointment.The author believes that Frida was energetic and should have become a doctor. C. What temperature is halfway between 3 degrees and -11degrees? And what is the mid point between -6 degrees and -10? And what is the midpoint between -60 degrees and 8 degrees? Washington said we can't have national morality" without "religious principles." Do you agree with him? Explain For a left-tailed test, the critical value of z so that a hypothesis test would __________ the null hypothesis at 5% significance level would be __________ For a regular 18 sided polygon what is the degree of rotation There are 7 boxes stacked on the floor in the math department supply closet. Each box has a height of 10 inches or 8 inches. The height of the stack of 7 boxes is 5 feet. How many boxes in the stack are 8 inches in height? Steam Workshop Downloader