Mathematics High School

The ratio of boys to girls in Ella's class is 3 to 4. The ratio of boys to girls in Minh's class is 4 to 5. Each class has a total of 20 girls. How many boys are in each class? *

Answers

Answer 1

Answer:

15 and 16

Step-by-step explanation:

i hop it helps

Answer 2

There are 15 boys in Ella's class and 16 boys in Minh's class.

What are ratio and proportion?

A ratio is a comparison between two similar quantities in simplest form.

Proportions are of two types one is the direct proportion in which if one quantity is increased by a constant k the other quantity will also be increased by the same constant k and vice versa.

In the case of inverse proportion if one quantity is increased by a constant k the quantity will decrease by the same constant k and vice versa.

Given, The ratio of boys to girls in Ella's class is 3 to 4. The ratio of boys to girls in Minh's class is 4 to 5.

Each class has a total of 20 girls and assuming each class has a total of x students.

∴ 4x/7 = 20.

4x = 140.

x = 35.

No. of boys = 15.

5x/9 = 20.

5x = 180.

x = 36.

No. of boys = 16.

learn more about proportion here :

https://brainly.com/question/7096655

#SPJ1

Related Questions

i need the x intercepts for (x+3)(x + 7) = 0

Answers

Answer:

-3, -7

Step-by-step explanation:

either x + 3 = 0 --> x = -3

or x + 7 = 0 --> x = -7

Answer:

(-3,0) and (-7,0)

Step-by-step explanation:

what is 2,394x57,234​

Answers

The answer is 137,018,196
Explanation calculator

The probability of a football team winning a game is three fifths. If they play 25 games in a season, how many games would you expect them to win?

Answers

Answer:

Step-by-step explanation: 3/5 of 25 is 15 so they will win 15 games

Jackson invested $750 into a savings bond that earned 3% interest each month. At the same time, he also began saving money in a savings account. The value of the savings account is represented by f(x) = 1,000 + 25x, where x represents the number of months since the account was opened. At the end of how many months did the value of the savings bond first begin to exceed the value of the savings account?

Answers

Answer:

33 Is the ANSWER

I only got this partially correct please tell me the correct answer

Answers

Answer:

its 5  can you answer mine please

Thanks for helping if ya did

Answers

Answer:

A

Step-by-step explanation:

Answer:

785 m

Step-by-step explanation:

Brainliest, pleeeeaseee??? Thanks I love YOUUUUUU

Is 2/5 and 8/20 equivalent

Answers

yes!
explanation:
8 divided by 4 equals 2 and 20 divided by 4 is 5

Answer:

Yes, they are.

Step-by-step explanation:

I need help with math if you don't know the answer get out of the question and don't answer it and give the wrong answer or some link or even say "I don't know" or anything like that it's not fair to me cause it a waste of my points I will report your if you do that :) have a nice day and stay safe

Answers

Answer:

the answer is 5 3/8

Step-by-step explanation:

the common denoiminator of 4 and 8 is 8 so you multiply 3 by 2 like you did 4 to get 8 and you multiply 5 by 1 like you did 5 to get 5 and you add it all together

Find the slope and y-intercept of the line in each graph.

Answers

1 slope is 2/4 and the y is 0
2. Slope is -2/3 and the y is 2
Hope this helps

help help help boi i literally don’t know the answer

Answers

[-9,3]
the domain is determined by the x values

Which line has a slope of -1/2? Line a, line b, line c, line d​

Answers

Answer: a

Step-by-step explanation:

Answer:

line d

Step-by-step explanation:

HEEEEELLLLLLPPPPPPP
>:D

Answers

Why they look like that

Answer: Mulan= Shan yu

Kuzko= Yzma

Hercules= hades

Step-by-step explanation:

a boat traveled 19 kilometers east and 53 kilometers south, how far from its starting position is it?

A 25-foot ladder rest against a house at a point 24.1 feet above the ground. How far away from the house is the base of the ladder?​

Answers

Answer:

56.3

6.6

Step-by-step explanation:

Answer:

A boat traveled 19 kilometers east and 53 kilometers south, how far from its starting position is it?: √3170≈56.3 km.

A 25-foot ladder rest against a house at a point 24.1 feet above the ground. How far away from the house is the base of the ladder?: √44.19≈6.65 ft.

Step-by-step explanation:

For these questions, we will need to use the pythagorean theorem: a²+b²=c², where a and b are the legs of the right triangle and c is the hypotenuse.

A boat traveled 19 kilometers east and 53 kilometers south, how far from its starting position is it?

In this question, we are looking for the hypotenuse.

19 and 53 are the legs of the triangle, so we can plug it into the equation:

19²+53²=c²

361+2809=c²

3170=c²

√3170=c

56.30275304103699, or approximately 56.3 km.

A 25-foot ladder rest against a house at a point 24.1 feet above the ground. How far away from the house is the base of the ladder?​

25 is the hypotenuse since it is leaning sideways and is the longest side. 24.1 is one of the legs.

In this question, we are looking for one of the legs.

Let's plug it in: 24.1²+b²=25²

580.81+b²=625

Subtract 580.81 from both sides.

b²=44.19

b=√44.19

6.647555941848102, or approx. 6.65 ft.

what is the answer of this 5-x=7-2x

Answers

Answer:

x = 2

Step-by-step explanation:

5 - x  = 7 - 2x

-x + 2x = 7 - 5

x = 2

Answer:

x=2

Step-by-step explanation:

5-x=7-2x

5+x=7 (Move 2x to the other side)

x=2 (Minus 5 from both sides)

Check:

5-x=7-2x

5-2=3

7-(2*2)= 7-4 = 3

(Correct)

HELP PLEASE





What are the steps in solving this system? (write them in WORDS and solve.)

5x - 2y = 4
10x - 2y = 14

Answers

5x - 2y = 4 (1)
10x - 2y = 14 (2)

divide (1) to (2),
-5x = -10
x = 2

Then, to find the y you can substitute the x = 2 to (1),
5(2) - 2y = 4
10 - 2y = 4
- 2y = 4 - 10
- 2y = - 6
y = 3

So, the x = 2 and y = 3

The ice cream vendor ‘s cold box holds 24 ice cream cups. The freezer has 8 cases of ice cream each with 48 cups. How many trips to the freezer will the vendor make if he sells all the ice cream? I have more for my brother.

Answers

Answer:

16

Step-by-step explanation:

24/8=3

48/3=16

Will spent $15 for 12 pounds of granola. What is his unit rate in dollars per pound?

Answers

Answer:

1.25

Step-by-step explanation:

to find the unit rate you have to find out how much one pound will be so you divide 15 by 12 and you get 1.25

What is this answer?

Answers

Answer:

B is the correct answer

16x^2 + 10x — 27 = -6x + 5

What are the solutions to this equation?

Answers

Answer:

x=1 or x=−2

Step-by-step explanation:

16x2+10x−27=−6x+5

Step 1: Subtract -6x+5 from both sides.

16x2+10x−27−(−6x+5)=−6x+5−(−6x+5)

16x2+16x−32=0

Step 2: Factor left side of equation.

16(x−1)(x+2)=0

Step 3: Set factors equal to 0.

x−1=0 or x+2=0

x=1 or x=−2

What is the area of the circle below?
10 ft

Answers

Answer:

Circle

Solve for area

A=π r^2

r =Radius

You about this first:

The circumference of a circle is its perimeter or distance around it. It is denoted by C in math formulas and has units of distance, such as millimeters (mm), centimeters (cm), meters (m), or inches (in). It is related to the radius, diameter, and pi using the following equations: C = πd. C = 2πr.

Step-by-step explanation:

Hope it is helpful....

Convert the following equation into
slope-intercept form.
x - 2y = 6

Y = ? X/ + ?

Answers

Y= -1/2x-3. Subtract x on both sides, then divide both sides by -2

How do you write 156 in scientific notation?

Answers

Answer:

Why is 156 written as 1.56 x 10^2 in scientific notation?

Step-by-step explanation:


y= {x + 19; (-9, 4)

Answers

Answer: No solution

Step-by-step explanation:

I don’t know if you want to see if (-9,4) is infinitely many solution, one solution, or one solution

Explain the steps to solving a two-step inequality.

Answers

Answer:

Step-by-step explanation:

i need help with this i really dont understand it. :)

Answers

Answer:

see explanation

Step-by-step explanation:

Given 2 sides of a triangle then the third side x is in the range

difference of 2 sides < x < sum of 2 sides

(11)

given 2 sides 2, 6 , then

6 - 2 < x < 6 + 2

4 < x < 8

(12)

Given 2 sides 4, 12 , then

12 - 4 < x < 12 + 4

8 < x < 16

(13)

Given 2 sides 2, 11 , then

11 - 2 < x < 11 + 2

9 < x < 13

Tina bought a new shirt for $20. Her mom said she will pay 15% of the total cost. How much will she pay?

Answers

Answer:

3

Step-by-step explanation:

HELP PLEASE!!!!!! 20 POINTS!!!!!!!!!!

Answers

Believe in yourself
5 is the answer. Thank you

Find the value of x.

Answers

Answer:

x = 14

Step-by-step explanation:

83 * 2 = 9x + 40

166 = 9x + 40

9x = 126

x = 14

The circumference of a circular table top is 20 π centimeters. what is the area of the tabletop.

Answers

Step-by-step explanation:

Hope the above solution helps

factor each expression

24x +8y


HELP ASAP
WRONG ANSWERS REPORTED

Answers

I think your answer would be 3(3x+y)
Other Questions
Fill in the correct words to complete the paragraph about internal conflict in literature.The most common type of internal conflict in literary works is known as character versus -. This conflict takes place within a character's .- find the 19th term of the arithmetic sequence d=5 a1=2 70 points brainliest just please help me lol another math problem i need help on 8. Adult conditioning may take longer than childhood conditioning because it requires unlearning behavior. (1 point)TrueO False Katherine's letter contains extraneous information that is not pertinent to the purpose of the letter.Which paragraph should Katherine delete? 8 cm4 cm18 cm16 cmplease hurry i know it is easy but help me Given AB congruent to EB and BD congruent to BC why is angle ABC congruent to EBD The radius of a circle is 7 centimeters. What is the circles circumference?Use 3.14 for pi Give an overview of the stages of psychosexual development according to Freud. In addition, explain what the Oedipus complex is and how identification reduces that issue.Please answer all parts Which medium does Wi-Fi use to send data between networks and devices? In part two of Trifles, how does the image of the dead bird wrapped in a silk cloth strengthen the feminist theme that women often suffer abuses within a male-dominated society?The bird symbolizes loneliness, which Mrs. Wright endured throughout her marriage to Mr. Wright.The bird symbolizes Mrs. Wrights beauty, which heightened Mr. Wrights insecurities about his marriage.The bird symbolizes Mrs. Wrights hopes of a singing career, which likely died when she married Mr. Wright.The bird symbolizes nature, which Mrs. Wright missed greatly once she became secluded in the house. here is a image. 6th grade problem i in 6th grade. Please do part A and part B for problem 1 and also please do problem 2 so ASAP answer it PLease! And please try people just put in random letters Solve the equation.5x = 16Solve for x which of the following would be a good place for the writer of the op-ed to link to additional information on the internet will give brainlistthe question is: the endpoints of line segment AR are A(8,-2) and R(-4,1)? round your answer to the nearest tenth new frienns boys nn girls 15+ Write the equation of a line that goes through points (5,6) and (2, 15). Each tile is 3/2 feet by 3/2 feet. There are 10 tiles on the bathroom floor.What is the area covered by the tiles?Explain how you know.