In a classroom with 45 students, there were twice as many girls as boys. How many of each were there?

Answers

Answer 1

Answer:

90

Step-by-step explanation:

Dialogue (sometimes spelled dialog in American English) is a written or spoken conversational exchange between two or more people, and a literary and theatrical form that depicts such an exchange.

Answer 2

Answer:

Girls are twice as many as the boys.

So let's assume girls to be 'x' and boys to be 'y' and adopt the simultaneous equation method to find out the answer to X and Y.

Firstly, let's us establish that: x + y = 45

Secondly, for every boy there are two girls. So,

2y = x.

We have the value for the 'x' here in the equation, so we will substitute that in the first equation:

2y + y = 45

3y = 45

y = 15

Boys are 15.

Put this answer into any of the equations now, we will the first one:

x + 15 = 45

x = 30

Girls are 30.

Step-by-step explanation:

Hope this helps

Crown me as brainliest:)


Related Questions

If 2 triangles are similar, which of the following conclusions can you make?

Answers

is there an image i can look at

The math club has 12 members. Each member pays monthly dues of $13.20. On the first day of the month, 8 members paid their dues. The remaining members paid their dues on the second day of the month. How much money was collected in dues on the second day of the month?

Answers

Answer: $52.80

Step-by-step explanation:

Number of members = 12

Monthly due per member = $13.20

Total amount expected = $13.20 × 12 = $158.40

On the first day of the month, 8 members paid their dues. Total amount paid will be:

= 8 × $13.20

= $105.60

The money that was collected in dues on the second day of the month will be:

= $158.40 - $105.60

= $52.80

Which observation could lead to the conclusion that an object is non-living?

a) it is composed of a cell, but does not have tissues
b it carries out synthesis of proteins
c it cannot perform metabolic processes
d it passes on hereditary information only through asexual reproduction

Answers

Answer:

C

Step-by-step explanation:

(b-1)2+2a; use a=6, and b=1

Answers

um i’m gonna go with 14 bc (1-1) is 0 and then 2+2(6) is 14. i could be wrong sorry

Part A
The cost of having one pizza delivered is $14. Each additional pizza costs $9 more. Choose the explicit formula to represent the situation.

A. an = 14 + 9(n + 1)
B. an = 5 + 9n
C. an = 14 + 9n
D. an = 5 + 9(n + 1)
Part B
The cost of having one pizza delivered is $14. Each additional pizza costs $9 more. Choose the recursive formula to represent the situation.

A. an = an – 1 + 5; a1 = 14
B. an = an – 1 + 23; a1 = 9
C. an = an – 1 + 14; a1 = 9
D. an = an – 1 + 9; a1 = 14

Answers

Answer: C

For part b, the answer is also C.

Step-by-step explanation:

14 Is the rate for the first pizza, then add 9 per pizza after that, so an=14+9n

Solve the equation. Round your answer to the nearest hundredth.
2 + 2.51d = 31

Answers

Answer: d=11.55

Step-by-step explanation:

2+2.51d=31

Bring 2 to the other side

2.51d= 31-2

2.51d= 29

Divide 2.51 from both sides

d= 11.55

The length of the base on an
isosceles triangle is 5x. The length of
a leg is 6x + 8. The perimeter of the
triangle is 107. Find the length of the
base.

Answers

Answer:

455/17 or 26 13/17

Step-by-step explanation:

Since the triangle is an isosceles triangle the legs are the same length.

2(6x+8) + 5x= Perimeter

12x+16+5x= Perimeter

Perimeter =107

17x=107-16

17x=91

x=91/17

Since we are trying to find the base which is 5x, we can substitute.

5*91/17= 455/17 or 26 13/17

Please help I’m super confused and don’t know what to write

Answers

Answer:

You just have to times 2 to each number

Hopes this helps! :D

Step-by-step explanation:

Answer:

multiply by 2

Step-by-step explanation:

Kali went on a school field trip to the Monterey Bay Aquarium. She left school and traveled on
the bus to the aquarium at an average speed of 50mph. Determine the number of hours on
the bus if they traveled 175 miles.

Answers

Answer:

Step-by-step explanation:

3.25 hours

I NEED HELP UNDER STANDING WHAT THIS PROBLEM IS ASKING ME!!

Tammy was given the option to baby-sit 20 hours Friday through Sunday or 30 hours Monday through Thursday. She earns $7.25 an hour for working weekends (Friday through Sunday). She earns $5.50 an hour for working weekdays. 12. Make a chart that shows Tammy the steps in figuring which option would allow her to make the most money. The chart should contain algebraic expressions. Use h to represent the number of hours in the expressions. Circle the answer in your completed chart.

Answers

Answer:

Weekend is the best answer

Answer: weekend best answer

Step-by-step explanation:

A model of a building is
constructed using a scale of
1 inch : 4.5 feet. If the model is
12 inches tall, then the actual
building is feet tall.

Answers

Answer:

54 feet tall

Step-by-step explanation:

12x4.5=54

plz help with problem

Answers

Answer:

q : r = 1 : 7

Step-by-step explanation:

77/11 = 7

112/16 = 7

126/18 = 7

Correct answer is 7


Step by step solution

Make sure to tell me if I’m right and give a thanks if I am

9.7814 1 decimal place

Answers

Answer:it’s the thousands place

Step-by-step explanation:

2 x 2 x 2 x 3 x 5 x 5 is the prime factorization of what composite number?
A. 120
B. 180
C. 450
D. 600

Answers

Answer:

D

Step-by-step explanation:

Answer:

Answer is D

Step-by-step explanation:

Ik ya’ll

Please help me with this I’m really confused

Answers

Answer:

13.5 minutes

Step-by-step explanation:

We can divide the final temperature to the rate of change to find the time it will take.

-10.8 ÷ -0.8 = 13.5

Check if needed.

13.5 * -0.8 = -10.8

Best of Luck!

Answer: 13.5 minutes

Step-by-step explanation:

We have to divide the temperature you need to reach by the temperature than rate changes at every minute.

-10.8 ÷ -0.8 = 13.5

The answer is 13.5 minutes. Hope this helps!

What is 2+2+5+4753%-474\3674

Answers

Answer:

54.4009853

Step-by-step explanation:

Simplify each term.  

2 + 5 +47.53 − 237 /1837

Find the common denominator.

2 ⋅ 1837 /1837 + 5 ⋅ 1837 /1837 + 47.53 ⋅ 1837/1837 − 237 /1837

Combine fractions.

3674 + 9185 + 87312.61 − 237 /1837

Simplify the numerator.

99934.61 /1837

Divide  99934.61  by  1837 .

=54.4009853

hey anybody watch how to train a drgon bro imma be a mad simp for ASTRID XD

Answers

Answer:

nice

Step-by-step explanation:

Answer:

Ok..kid..I mean yeh.

Step-by-step explanation:

btw wassup

Ik you but you don't know me lol..

I'm not a stalker ok..soooo..don't worry

what is 21.1 / 3. I do not get it. I am also bad at math :(

Answers

Answer:7.03

Step-by-step explanation: hi

Solve for v.
4(v + 2) = 20
V =

Answers

Answer:

v= 3

Step-by-step explanation:

hope this helps!

Answer:

V = 3

Step-by-step explanation:

4(v + 2) = 20               we must first distribute

4v + 8 = 20                 we subtract 8 from both sides

4v + 8 - 8 = 20 - 8      we simplify that

4v = 12                        we divide both sides by 12 to isolate v

V = 3

mark the x intercepts in red and mark the y intercepts in blue: which points are red and which points are blue? i will MARK AS BRAINIEST !

Answers

yes i agree with the other person

Rick bought 5 yogurt bars at a snack shop. Each yogurt bar cost $1.70.

Complete the table to show the price of 2, 3, 4, and 5 yogurt bars.

Number of Yogurt Bars Price
1 $1.70
2 $
3 $
4 $
5 $

Answers

9514 1404 393

Answer:

  see below

Step-by-step explanation:

Each table entry has $1.70 added to the previous entry.

Bars, Price

1, $1.70

2, $3.40

3, $5.10

4, $6.80

5, $8.50

Devon Price is a high school teacher and soccer coach.

Answers

Answer:

... is this a question ???

(-3)-(-8)+(-1)+(-6)
A. -2
B. 5
Which one? ​

Answers

Answer:

A. -2

Step-by-step explanation:

-3+8-1-6=-2

Hope it helps :)

Answer:A. -2

Step-by-step explanation: You would do -3+8 because the two - signs turn to a positive and that will give you five. Then subtract one to get four. Then subtract six to get -2.

Mrs.canales class is selling frozen pizza to earn money for a field trip.For every pizza they sell they earn $5.35 .They currently have $182.90 their goal is $750.00 how many more pizzas do they need ?

Answers

Answer:

their you go cuz

Step-by-step explanation:

They still have to earn:

$750 - $182.9 = $567.1

and if they make $5.35 for every pizza sold:

$567.1 : $5.35 = 106

Answer:

They must sell 106 pizzas more.

Answer:

They must sell 106 pizzas more.

Step-by-step explanation:

They still have to earn:

$750 - $182.9 = $567.1

and if they make $5.35 for every pizza sold:

$567.1 : $5.35 = 106

Answer:

They must sell 106 pizzas more.

PLEASE HELP ASAPPPPP!!!!!
Malik eats 2 bananas every day.


On a coordinate plane, the points (1, 2), (2, 4), (3, 6), (4, 8), and (5, 10) are plotted.


Use the graph to complete the statements.


The two variables are

.


are graphed on the x-axis.


are graphed on the y-axis.


is the independent variable.


is the dependent variable.

Answers

Answer:

Use the graph to complete the statements.

The two variables are  

✔ bananas and days

✔ days

✔ bananas

✔ days

✔ bananas

Got it right lol uwu

The statement first "The number of bananas is the independent variable, and the cost in dollars is the dependent variable" is correct.

What is a line graph?

A line graph is a graph made up of segments of straight lines that connect the depicted data points.

here, we have,

On a coordinate plane, the points (1, 2), (2, 4), (3, 6), (4, 8), and (5, 10) are plotted.

We have:

The line goes through points (1, 0.27) and (2, 0.54).

The x-axis represents the independent variable

The y-axis represents the dependent variable.

Thus, the statement first "The number of bananas is the independent variable, and the cost in dollars is the dependent variable" is correct.

Learn more about the line graph here:

brainly.com/question/23680294

#SPJ3








Please help please
Sean wrote the following expression on his paper.
Please simplify the expression for Sean.
2x - x + 15 + 5x – 4
• 6x + 11
o 7x + 19
o 8x + 11
o 17x

Answers

It is 6x + 11, add like terms,( add all of the x together) 2x-x+5x= 6x , then add 15+-4=11

Paul bought a stock for $98. He sold it for $62. What was the percent markdown on the stock? Enter the missing part of the answer.

Answers

Answer:

it was a 36.73% decrease

Step-by-step explanation:

62/98 = .63265

1-.63265 = .3673

What is the product of 70 x 10^4?

Answers

the answer is 700000 unless you are using scientific notation then the answer is 7x10^5

Pls help! I’m giving out brainliest to the first person who answers!

Answers

Answer:

1=137

2=43

3=137

4=43

5=43

6=137

7=43

8=137

Solve the inequality:


11x+12≥45

Select one:

x>3

x≤3

x<3

x≥3

Answers

Answer:

ALL OF THEM

Step-by-step explanation:

Answer:

x≥3

Step-by-step explanation:

subtract 12 from each side

11x≥33

divide by 11

x≥3

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