Mathematics Middle School

A recipe calls for 3 cups of flour to make 2 batches of dinner rolls. One batch makes 15 rolls. Laura is making dinner for 12 people and only needs one roll per person.
What proportion will help Laura find how much flour is needed to make 12 dinner rolls?
A. 3/30 = x/12
B. 3/2 = x/12
C. 3/15 = x/12
D. 12/15 = x/3

Answers

Answer 1

Answer:

A

Step-by-step explanation:

3 cups of flour produces 2 batches of dinner rolls. So, if one batch makes 15 rolls, then 2 batches makes 30 rolls. Therefore, 3 cups of flour produces 30 rolls.

Laura wants to find how much flour she needs to make 12 rolls.

Here's the setup:

Let x be the number of cups of flour needed. Then,

(3 cups of flour)/(30 rolls)=(x cups of flour)/(12 rolls)

This is the set up for all equations involving ratios. The units should be consistent. Notice how I have flour/rolls=flour/rolls.

It is not necessary to solve the equation, but you should to make sure your answer makes sense. By cross-multiplying, we get x=(3*12)/30 or 1.2 cups.

This solution makes sense. Because 3 cups of flour produces 30 rolls, one cup produces 10 rolls. We need slightly more than 1 cup to get 12 rolls.

Answer 2
A. 3/30=x/12
Or B 3/2 = x/12

Related Questions

Pleas help ASAP thank you

Answers

Answer:

The answer:7.5

Step-by-step explanation:

Answer : 7.5


15*2=30

45-30=15

15/2= 7.5!!

(please mark me brainlest)

I have an assignment due and I need help. These are the problems! WILL MARK BRAINLIEST and 32 points is all I have im sorry!
1. Find the selling price if the cost to the store is $80 and the Markup is 60%. Do not label your answer
2. Find the selling price if the cost to the store is $140 and the Markup is 25%. Do not label your answer
3. Find the selling price if the cost to the store is $50 and the Markup is 10%. Do not label your answer.
4.Find the cost to the store if the store is selling a game for $48 with a markup of 20%. Do not label your answer
5. Find the cost to the store if the store is selling shoes for $54 with a markup of 8%. Do not label your answer
6. Find the cost to the store if the store is selling chips for $3.24 with a markup of 35%. Do not label your answer
7. Find the precent of markup if the cost to the store is $350 and the store is selling the bike for $402.50. Do not label your answer
8. Find the precent of markup if the cost to the store is $250 and the store is selling the TV for $312.50. Do not label your answer
9. Find the precent of markup if the cost to the store is $200 and the store is selling the bike for $376. Do not label your answer
and then there are some problems that I will ask please help ASAP!!!! WILL MARK BRAINLIEST!

Answers

1) 128
2) 175
3) 55
4) 40
5) 50
6) 2.40
7) 15
8) 25
9) 88

Explanation:

Double checked all work so those are correct answers :)) please mark me brainliest because this took quite a while to make sure everything was correct

Giving brainliest!!!!!!!!!!!!!!!!!

Answers

Answer:

c

Step-by-step explanation:

i don't really know how to explain it, but i'm 99.9999999% sure it's C. hope u get an A on ur assignment! xoxo

Answer:

C would be the answer. :)

Step-by-step explanation:

Suppose Year 0 = 2010

1) What is the slope of this trendline? Explain the significance of the slope in the context of the model. 2) What is the y-intercept of this trendline? Explain the significance of the y-intercept in the context of the model. 3) Predict what the outcome will be 50 years from now. Is making a prediction 50 years into the future appropriate? Why or why not?

Answers

the slop is stocks falling you dont need it
78 is the correct answer pls give it

Convert 25/6 into a mixed number

Answers

Answer:

4 1/6

Step-by-step explanation:

4.16666666666666666666656

Solve for x in the diagram below.

Answers

Answer:

3x+45=180

3x=180-45

3x=135

x=45  

Step-by-step explanation:

use the equation:
180=2x+45+x
180=3x+45 (combine like terms)
135=3x (subtract 45 from both sides)
45=x (divide both sides by 3)

Which set of angles are alternate interior angles

Answers

Answer:

2&7

Step-by-step explanation:

Answer:

7 and 2

Step-by-step explanation:

help picture provided

Answers

Answer:

If I am correct and I understand it its between 40 and 50.

Step-by-step explanation:

Thats because the square is on 40 and ends on 50.

I hope this helped, tell me if something was wrong.

Goodluck!!!!

:D

it is between 45-50!!!! I WISH YPI LUCKLK

7.99 + 2.46
Please help me I really need this done

Answers

Answer:

10.45

Step-by-step explanation:

It's easy 7.99 + 2.46=10.45 you just add them up!

Hope that helps! :)

I dont know this so please help me

Answers

a is 3k^2

b is -12k

and c is 12

A.3k2
B.-12k
C.12
Yuh the answers for this

The Wagner school store is having a sale! At the sale this week, a life sized stuffed animal of Wagner’s mascot is being sold for $158.40. This is a 52% discount of the original price. What is the original price? If necessary, round to the nearest cent.

Answers

Answer:

157.88 is the correct answer

1157.88 is the correct answer

Find each unit rate.
1. 70 mi in 5 h 2. $9.52 for 8 gals

3. 192 ft in 6 s

Answers

Answer:

1-=14, 2=1.19, 3= 32

Step-by-step explanation:

awdawfawfg

44555555555555555543

Answer ASAP pleaseee

Answers

Answer:

Dionostics sucks. Just did one. The answer to that is the top one with the scalenes.

Step-by-step explanation:

Scalene triangles so a

Write the equation of the line in fully simplified slope-intercept form.

Answers

Answer:

y=-1/2x-1

Step-by-step explanation:

the slope intercept form is y=mx+b

m=slope

b=y intercept (where the line crosses the y axis)

to find slope you do rise over run or rise/run

the rise of you slope is -1, and the run of your slope is 2, meaning your slope is -1/2

the line crosses the y axis at point -1

plug what you find into the slope intercept form, and you get y=-1/2x-1

Evaluate 2a+2b when a=10.8 and b=8.3

Answers

2(10.8) = 21.6
2(8.3) = 16.6
21.6 + 16.6
Answer: 38.2
The answer is 38.2

2* 10.8 + 2* 10.8

calculate the volume of the prism by first finding the total number of half unit cubes that will fill it. there are 8 half unit cubes in every unit cubes.​

Answers

Answer:

b

Step-by-step explanation:

the answer is b

The answer would be B

Please help me I'm trying to get this done and can you please explain it!

Answers

i’m guessing it’s D because it just stops on the y-axis and if it was symmetrical then it wouldn’t be a function at all

Please help!
This data gives the average number of hours of exercise each week for different students.

Average time (hours): 3.7, 4.0, 3.5, 3.3, 4.0, 3.8, 3.5, 3.8, 3.8, 3.4, 4.0, 3.8

Create a line plot to display this data.

Answers

Answer:

Step-by-step explanation:

YOu just need to plot all these points on a number line. I don't hav ethat feature on here tho so i can't do it for you. Just write them all on a number line!

3.7, 4.0, 3.5, 3.3, 4.0, 3.8, 3.5, 3.8, 3.8, 3.4, 4.0, 3.8

3.3 3.4 3.5 3.5 3.7 3.8 3.8 3.8 3.8 4.0 4.0 4.0

I have a triangle: Angle A = 3x +28; Angle B = 5x +52; Angle C = 2x - 10: Solve for X

Answers

I have no clue if I even did this right but here’s my work. I don’t wanna get it wrong for you!
Answer: x=11


Explanation: The anglers in a triangle must all add to 180.

Therefore, we can use the equation 180=3x+28+5x+52+2x-10

Combing like terms gives us 180=10x+70

Solving for x gives us 11.

To check our work, we can plug in 11 for x.

3(11)+28+5(11)+52+2(11)-10=180.

The model below represents an equation. Write the equation that is modeled then find what value of x makes the equation true. HELP ASAP PLZ PLZ PLZ PLZ

Answers

Answer:

x = 5

Step-by-step explanation:

6x - 5 = 4x + 5

The only thing that makes x true is 5. (This might not help if I read the question wrong.)

Answer:

6x-5=4x+5

x=5

Step-by-step explanation:

6x-5=4x+5

Subtract 6x from both sides

-5=-2x+5

Subtract 5 from both sides

-10=-2x

Divide by -2 on both sides

x=5

HELP MEH!!!!!!!!!!!!!!!!!!!!! please UwU

Answers

Answer:

Its  C

Step-by-step explanation:

Answer:

e

Step-by-step explanation:

create a table of values for Jacksons situation described above
(Non proportional relationships)​

Answers

Answer:

5)0

6)15

7)30

8)45

9)60

10)75

,helpppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp,

Answers

Answer:

All of them so it would be 4

Step-by-step explanation:

SCIENCE PLEASE HELP!!!!

Use evidence and reasoning to support the claim that a stronger force changes velocity more than a weaker force. Write answer in your own words.

Answers

In the final example of the last section, we saw how we could calculate a dynamic acceleration based on a vector pointing from a circle on the screen to the mouse position. The resulting motion resembled a magnetic attraction between circle and mouse, as if some force were pulling the circle in towards the mouse.

Answer:

the imposter is sus

Step-by-step explanation:

among drip sussy

Monica has a shooting percentage of 20% if she attempts 15 shots in a game how many can she make

Answers

Answer:

3 successful attempts

Step-by-step explanation:

20/100×15=3 successful attempts

Does anyone know the answer to this?

Answers

X=20
Hehehheheheheheheh
i think it is x=20 like he said

Help for brainiest and extra points !!!

Answers

Answer:

1. A, because 4(2)=8. 2 is the x.

2. B, because 2.5 x 4 = 10, which makes sense.

3. B, because 5x is the amount that you want to put into equal parts and the 3 is just being subtracted from the amount of the equal parts from the 5x.

4. C.

Step-by-step explanation:

Answer:

1. correct

2. B

3. D

4. i don't know number 4 :'(

Step-by-step explanation:

Find x in the following problems:

Answers

Answer:

80 degrees

Step-by-step explanation:

the lines indicate that the angles F and E are the same degree.

Will give brainliest please show your work

Answers

Answer:

Step-by-step explanation:

For surface area you wanna find the area of all the sides and then add them up to get surface area

Take all the measurements and multiply each one by 2 because there are 2 sides for each measurement and then add your answers all up to get your final answer. For example: here’s what I did for problem 1

Can someone help with finding the area of this shape. The answer choices are on the second picture

Answers

Answer:

I think the answer is D

Step-by-step explanation

Multiply the height by the width then divide by 2
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