Dierdre’s work to solve a math problem is shown below.

Problem: How many 1 and one-half-foot pieces can be cut from a 12-foot length of ribbon?
Step 1:
1 and one-half divided by 12 = n
Step 2:
Three-halves divided by 12 = n
Step 3:
Three-halves times StartFraction 1 Over 12 EndFraction = n
Step 4:
StartFraction 3 Over 24 EndFraction = n
Answer:
One-eighth = n

What was Dierdre’s first error?
She switched the divisor and the dividend in step 1 when creating an equation to model the problem.
She used an improper fraction in step 2 that is not equivalent to 1 and one-half.
She replaced the divisor by its reciprocal in step 3 instead of replacing the dividend by its reciprocal.
She reduced the fraction in step 4 incorrectly.

Answers

Answer 1

Step-by-step explanation:

step 1

Answer 2

Answer:

Step 1)-She switched the divisor and the dividend in step 1 when creating an equation to model the problem.

Step-by-step explanation:

I got it right on my unit test :>


Related Questions

Help me find a 3rd degree binomial

Answers

Step-by-step explanation:

A binomial expression has two terms. For example, 4x + 5,

The degree of any polynomial refers to the term with the highest exponent on its variable. For example, In expression 4x + 5, the exponent of x is 1 so it is 1st degree polynomial and in the same way, for  since the variable y has the highest exponent i.e., 2 therefore it is 2nd degree polynomial.

Now, third degree binomial with constant term 8 =

As it has two terms where first term is  and second term is 8. Therefore, it is called binomial and since the highest exponent with variable x is 3, therefore it is third degree binomial with constant term of 8.

8. It took Sharon 85 minutes to wash three cars. She spent x minutes on each car and 10 minutes
putting everything away. Solve 3x +10 = 85 to find out how long it took to wash each car.
a. 5.5 minutes
b. 28.3 minutes
c. 25 minutes
d. 31.65 minutes

Answers

Answer:

c. 25 minutes

Step-by-step explanation:

3x + 10 = 85

3x = 85 - 10

3x = 75

x = 25

Help please I’ll give you 25 points

Answers

Answer:

=x3y+8

Step-by-step explanation:

The answer to your question is in the picture ❤️

**A lady came to the market to sell eggs. Her first customer bought 1 2 of all her eggs and 1 2 of an egg. Her second customer bought 1 2 of all the remaining eggs and 1 2 of an egg. Finally, a third customer bought 1 2 of all of her remaining eggs and 1 2 of an egg. At this point she had sold all of the eggs she had brought to the market so she went home. How many eggs did the lady have when she first came to the market?

Answers

Answer:

She had 7 eggs when first went into the market

Step-by-step explanation:

Three times multiply 1/2 and minus 1/2 until you get zero.

7 x 1/2 - 1/2 = 3

3 x 1/2 - 1/2 = 1

1 x 1/2 - 1/2 = 0

Answer:

7

Step-by-step explanation:

.
Find the measure of ∠3.




45°


90°


135°

Answers

The answer you are looking for is 45

If x < 5, then which of the following must be true?

Answers

Answer:what are the options

Step-by-step explanation:

A

B

C

D

Answer:

You have to put the following lol Give me the options and I'll answer

Step-by-step explanation:

Which system of equations does the graph represent?

A) y = 2x + 2
y = -3x + 4

B) y = x + 2
y = -x + 4

C) y = 2x + 4
y = -3x + 2

D) y = -x + 2
y = x + 4

Answers

Answer:

The answer is B) y= x + 2

y= - x + 4

Identify the scale factor used to dilate triangle ABC to triangle DEF.

A(2,6), B(4,2), C(8,8)
D(3,9), E(6, 3), F(12, 12)

A. 3/2

B. 3

C. 2

D. 5/2

Answers

The answer is A. 3/2

Please Answer! I have been working on this for an hour and can't get it!
Given A (4,2) and B (-1,y), what is y when the slope of AB is -7/5?

Answers

The answer is B = (-1, -5)

Because -1 to 4 is 5 which is the run from
rise/run
So we would apply 2 - 7
Which would be - 5

Give me brainliest if this helped

ron wants to buy a video game with a selling price of ​$60​, on sale for​ 50% off. The sales tax in 4.5% state is . How much will he have to pay in​ all? If has ​$34​, can he afford to purchase the​ game?

Answers

Answer:

Yes, he can.

Step-by-step explanation:

To find the sale, you need to times the sale percentage by the original price so

60 x 0.50 = 30

Then you subtract the original price by the sale price so

60 - 30 = 30

So the with the sale, the price is $30.

Now the tax

Do the same

30 x 0.045 = 1.35

Now instead of subtracting you add so

30 + 1.35 = $31.35

Yes, he can afford it.

A t-shirt vendor is thinking about changing the number of t-shirts he brings to an event. Which size should he bring more of?

Answers

Answer:

medium

Step-by-step explanation:

Mediums were sold the most, and this size had the least amount remaining at the end of the event. Hope this helps  

Answer:

medium!! {a p e x :))}

------------------------

Step-by-step explanation:

small: 160/225=0.71*100=71 shirts

medium: 335/375=0.893*100=89 shirts

large: 275/325=0.846153*100=85 shirts

x-large: 125/175=0.714285*100=71 shirts

based on the math above, the medium shirts sell the best, which means that the vendor should bring more of the medium shirts

Sandra's bird feeder holds 3/5 of a cup of birdseed. Sandra is filling the bird feeder with a scoop that holds 1/10 of a cup. How many scoops of birdseed will Sandra put into the feeder?

Answers

6, because 3/5=6/10 and 1/10*6=6/10.

Please can anyone simplyfy that and can you tell the steps?​​

Answers

Step-by-step explanation:

Hope I did the way it was required! And helped you somehow!

Which ratios have a unit rate of 4? Choose ALL that apply.

Answers

Answer: It’s 2 cups and 1/2 and 2 1/2 and 5/8

Step-by-step explanation:

The ratios have a unit rate of 4 will be 2 ¹/₂ cups: ⁵/₈ cups and 2 cups: ¹/₂ cups. Then the correct options are C and D.

What are ratio and proportion?

A ratio is a collection of ordered integers a and b represented as a/b, with b never equaling zero. A proportionate expression is one in which two items are equal.

The ratios are given below.

A)  4 ¹/₃ cups: 3 cups = 1.44

B)  ⁷/₈ cups: 3 ¹/₂ cups = 0.25

C)  2 ¹/₂ cups: ⁵/₈ cups = 4

D)  2 cups: ¹/₂ cups = 4

E)  ¹/₈ cups: 1 cup = 0.125

F)  4 cups: 1 ¹/₄ cups = 3.2

The ratios have a unit rate of 4 will be 2 ¹/₂ cups: ⁵/₈ cups and 2 cups: ¹/₂ cups. Then the correct options are C and D.

More about the ratio and the proportion link is given below.

https://brainly.com/question/14335762

#SPJ5

please helppppppppppppp asapppp

Answers

Answer:

Step-by-step explanation:

(6, 6.8) and (1, 2.3)

Enter on graph then draw line through the points.

Please give me brainliest

At cultutral arts day each session lasts 4/5 hours. The principal has set aside 3 hours for the sessions. Determine the number of sessions that can be sheduled for each student

Answers

Answer: 3.75

Step-by-step explanation:

The following can be gotten from the question:

Time taken for each session = 4/5 hours

Total time set aside by principal = 3 hours

The number of sessions that can be sheduled for each student will be:

= Total time set aside by principal / time taken for each session

= 3 hours / 4/5 hours

= 3 × 5/4

= 3.75

A certain forest covers an area of 3000 km^2. Suppose that each year this area decreased by 8%. What will the area be after 15 year? Round answer to nearest square kilometer

Answers

Yes queen go get it girl forest THE ANSWER IS forest 2000 x 8% 15 year.

The denominators of a fraction is r more than the numerator. If the numerator is increased by 2 and the denominator is increased by 5 , the fraction obtained is 5/12 . Find the fraction​

Answers

Answer:

please correct your question

A sweater priced at $34.99 is on sale for 25% off. Find the cost with 7.5% sales tax.

Answers

Answer:

25%=$8.74 7.5%=$2.62

Step-by-step explanation:

Plz hurry!!

Click the answer that shows the numbers in order from least to greatest.


A. 1.6, 0.9, 0.2, -0.8, -2.4

B. -0.8, -2.4, 0.2, 0.9, 1.6

C. -2.4, -0.8, 0.2, 0.9, 1.6

D. -0.8, 1.6, 0.9, -2.4, 0.2

Answers

Answer:

C is the correct answer

Two friends, Aria and Kaylee, took summer jobs. The equation y = 20.2 x y=20.2x represents Kaylee's earnings in dollars and cents, y y, for working x x hours. Aria earned $737.20 in 38 hours.

Answers

Answer:

y=19.4x------represents Aria's earnings in dollars and cents,

Step-by-step explanation:

The question is not complete, however, the idea from this response can provide the needed solution and understanding

 Step one:

The linear function for the earnings is given as

y = 20.2x-----this represents Kaylee Earnings.

y represents the total earnings

x represents the earning rate, in this situation it $20.2 per hour, this is also the gradient of the function m

Step two:

we want to find th equation for Aria earning

y= $737.20

time taken x=38 hours

737.2=m(38)

divide both sides by 38

m=737.2/38

m=19.4

this means that Aria earn $19.4 per hour

the function for Aria is

y=19.4x

Put the following equation of a line into slope-intercept form, simplifying all
fractions.

8y – 4x = -56

Answers

Here you go!! Hope this helps

Which is a monthly cost associated with renting a house? A. utility bills B. property tax C. security deposit

Answers

Answer:

Property tax

Step-by-step explanation:

That is because you are paying to live on that property. As utility bills. Is like paying for tools and that is not a part of renting a house. Sercurtity deposit is not a thing.

Answer:

A. utility bills

Step-by-step explanation:

solve for x and simplify -5/6x=-3

Answers

Answer:

x = 18/5

General Formulas and Concepts:

Pre-Alg

Order of Operations: BPEMDAS Equality Properties

Step-by-step explanation:

Step 1: Define equation

-5/6x = -3

Step 2: Solve for x

Divide both sides by -5/6:               x = 18/5

Step 3: Check

Plug in x to verify it's a solution.

Substitute:                    -5/6(18/5) = -3Multiply:                        -3 = -3

If a scale drawing of a car is 3 inches and the real car is 15 feet what is the scale and the scale factor

Answers

Answer:

5

Step-by-step explanation: 3x5=15

Frog and Toad decided to meet. Their houses are 120 ft apart. They start hopping towards each other at a speed of 2 ft/min and 3 ft/min, respectively. How long it will take until they are going to be 5 feet apart? PLS HELP ME ASAP

Answers

Answer:

24

Step-by-step explanation:

no explanation, I'm very sorry!

HELPPPPP ASAPPPPP PLSSSS

Answers

C tell me if you get it right

How many sig figs does 602 200 000 000 000 000 000 000 molecules have ? Explain

Answers

Answer:

4

Step-by-step explanation:because 6022 is the sig figs, and 00000000000000000000 doesnt work because it is zero

PLEASE HELP ME ITS DUE TODAY!!!
Floor tiles are 12 inches by 12 inches. How many tiles are needed
to tile a floor that is 36 feet by 15 feet?
Which expression can be used to solve this problem?

Answers

Answer: 540 tiles are needed to tile a floor that is 36 feet by 15 feet.

Step-by-step explanation: You need to find the area of the floor. 36x15 is 540.

Will mark brainlist! Andrea spent $2 to make 10 prints from a photo both. Later, she spent $6 to make 30 prints. Did she get a better deal the first or second time she purchased prints. How do you know?

Answers

Answer:

She got an equally good deal both times

Step-by-step explanation:

[tex]\frac{2}{20}[/tex] can be simplified to make [tex]\frac{1}{5}[/tex]

[tex]\frac{6}{30}[/tex] can be simplified to make [tex]\frac{1}{5}[/tex]

they are the same

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