Please answer the following essay question:

Explain why we need to have a common denominator in order to add or subtract fractions.

Answer in paragraph form using complete sentences and include any calculations, graphs, and labeled diagrams as appropriate.

Answers

Answer 1

Answer: The denominator of a fraction tells you the relative size of the pieces. Therefore, the reason fractions need a common denominator before adding or subtracting is so that the numbers of pieces you are adding/subtracting are all the same size.

Answer 2

Answer:

We need to have a common denominator in order to subtract different fractions because if we have an example like.

5/2 - 6/8 we cannot do that because the denominator is not alike.

We have to use multiplication to help us here.

2 x 8 = 16 !

So. no we have 5/16

so now we do 5 x 8 = 40

So now my new fraction is - 40/16 BUTTTT 40/16 is an improper fraction. so 40/16 = 5/2

Now we are back at the square 1 so now we have to fix 6/8.

8 x 6 = 48

6 x 6 = 36.

--

2 x 24 = 48.

5 x 24 = 120 or 12

now we have 12/48 and  36/48.

We can subtract now!

Hope this helped for problems like this.


Related Questions

pls help this was due 3 minutes ago!!!!

Answers

Answer:

=4

Step-by-step explanation:

Answer:

-0.7

Step-by-step explanation:

2 8/10 = 2.8

2.8 + (-3.5) = -0.7

when cheenu was a boy he could run a 15 miles in 3.5 hours when he was an old man he could walk a 10 miles in 4 hours what is the difference between the time

Answers

I think that the answer to this would be years later! Please correct me if Im wrong!

:)

Brainliest?

When Cheenu was a boy he could run 4.28571mph, when he’s older, he can run 2.5mph. That’s a difference of 1.78571mph

Mrs. Lopez bought 6 rosebushes at Lowes for $22.08. What is the unit cost of one rosebush?

Answers

it will be $3.68 for each rose bush because if she bought 6 of them for $22.08 then 22.08/6=3.68

Need help on the last one with a circle

Answers

2x is the answer 19-5 equals 14 divided by seven is two

Answer:

x=84

Step-by-step explanation:

16-2=14 so then x/6=14 then 6*14 which is 84 so the it is x=84

A large bottle of juice contains 500 milliliters. A smaller size bottle has 70% as much juice. How many milliliters or juice are in the smaller bottle?

Answers

Answer:

350 milliliters.

Step-by-step explanation:

Answer:

350 milliliters

yesterday at football practice, Han made 12 of his field goal attempts. Today he made 75% as many as he did yesterday. How many attempts did han make today?

Answers

Answer:

9

Step-by-step explanation:

.75 x 12 = 9

Answer:

answer is 0.16

Step-by-step explanation:

12/75=0.16 it's division if u don't understand what i did srry

Write the equation of the line that has the same slope as the line graphed and passes through (1.-8).​

Answers

Answer:

y = -8

Step-by-step explanation:

There is no x-variable as that would make the line tilt.

Hope this helps!  Have a nice day!

Luis wants to buy a skateboard that usually sells for $79.83. All merchandise is discounted by 12%. What is the total cost of the skateboard if Luis has to pay a state sales tax of 6.25%. Round your intermediate calculations and answer to the nearest cent.

Answers

Answer:

70.25 (i would double check)

Step-by-step explanation:

Answer above is wrong ^

dentify the pattern rule for this sequence: 1, 4, 2, 8, 6, 24, 22…
add 3, divide by 2
multiply by 4, subtract 2
add 3, subtract 2
multiply by 4, divide by 2

Answers

Answer:

Step-by-step explanation:ffcrrer

Answer:

multiply by 4 subtract 2

-hope this helped have a good rest of your day :)

Step-by-step explanation:

He was a newcomer in the land, a chechaquo, and this was his first winter. The trouble with him was that he was without imagination. He was quick and alert in the things of life, but only in the things, and not in the significances.

What do you believe the author is trying to explain and tell the reader?

Tip: Think about what the author is wanting you to understand with the underlined sections. Fully develop your thoughts to answer this question.

Answers

Answer:

The author is trying to tell us that you need an imagination

Step-by-step explanation:

Which equation represents a linear function of x?
A. 2x + y = 4
B. y = the square root of x
C. 3x - y = x(x+2)
D. y = (x+3)(x-5)

Answers

answer should be A. 2x + y = 4, hopefully this helped :]
The correct answer would be A. 2x + y = 4

Winston, an architect, is adding a stalrway to a parking garage. The stairway must be 3 meters high, and he has enough room on the ground for the staircase to reach the ground 9 meters away, which will satisfy local building codes. To the nearest tenth, how long will the stair stringer be?
A. 9.0 meters
B. 9.5 meters
C. 81 meters
D. 90 meters​

Answers

The correct to me seems to be A
I’m pretty sure it’s A

How the Right of Occupancy can be transferred or exchanged.

Answers

Answer:

wha...?

Step-by-step explanation:

What is the percent error in her estimate?

Answers

28.42% i'm so sorry. this most likely wrong. but i tried
i think the guy above is correct 28.42

Rectangle QRST has coordinates Q(-3, 7), R(-3, 11), S(4, 11), and T(4,7)

Dilate the rectangle by a scale factor of 3 with a center of dilation at the origin. What are the coordinates of rectangle Q’R’S’T’? Explain your reasoning. Is the dilation a reduction or an enlargement?

Answers

Q’= (-6,21) R’=(-6,33) S’=(12,33) T’=(12,21) the scale factor is 3 so you multiply the coordinates by 3. It is an enlargement

A hot air balloon ascended to a height of 35 meters 2 minutes after launch. After some time, the balloon's altitude began to change by −3 1/4 meters every minute for 9 minutes. To avoid a tree, the hot air balloon flew up by 5 1/2 meters. What is the new altitude of the hot air balloon? I’m super confused! Please helpp.

Answers

10.25 maybe i could be incorrect

535 divided by 30 with a remainder?

Answers

Answer:

17 with a remainder of 25

Step-by-step explanation:

A biology class examined some flowers in a local meadow. The students saw 63 perennial flowers and 21 annual flowers. What percentage of the flowers were perennials?

Answers

Answer:

63%

Step-by-step explanation:

Answer:

63%

Step-by-step explanation:

Hope I helped

help pls <33 pic provided

Answers

Answer:

(-10,-4) (10,2)

Step-by-step explanation:

Answer:

y= 4/1x+3

Step-by-step explanation:

y=mx+b

first identify "b", which is where the line crosses the y-axis, in the graph we can see it does so at unit 3.

b= 3

next, we will find where the line crosses any point on the graph perfectly, such as coordinate (1, 7). Now use unit 3 on the y-axis as your reference point, we can see coordinates (1, 7) is 4 units up and 1 unit to the right from our reference point. This indicates our "m",

m= 4/1

therefore, y=4/1x+3

Which equation can be used to find 75 percent of 200?
(A) StartFraction 75 times 1 Over 200 times 1 EndFraction = StartFraction 75 Over 200 EndFraction
(B) StartFraction 100 times 26.7 Over 75 times 2.67 EndFraction = StartFraction 267 Over 200.25 EndFraction
(C) StartFraction 200 times 2 Over 100 times 2 EndFraction = StartFraction 400 Over 200 EndFraction
(D) StartFraction 75 times 2 Over 100 times 2 EndFraction = StartFraction 150 Over 200 EndFraction

Answers

the answer is x= 75*2
x= 3/4*200
and the equations are x= 75/100 *200
= 75*2
or 3/4 * 200
The answer is x=75*2

1 yard in 6 minutes

Question 1
Part A

Find the unit rate.

Answers

The unit rate is 1 yard :: 6 minutes. This is correct because you cannot divide each number evenly.

The unit rate in feet per second is 1/120 feet/sec.

Given that, 1 yard in 6 minutes.

What is the unit rate?

Unit rate can be defined as the ratio between two measurements with the second term as 1. It is considered to be different from a rate, in which a certain number of units of the first quantity is compared to one unit of the second quantity.

We know that 1 yard=3 feet and 1 minute = 60 seconds

Now, 6 minutes = 360

So, unit rate is 3/360

= 1/120 feet/sec

Therefore, the unit rate in feet per second is 1/120 feet/sec.

#SPJ2

"Your question is incomplete, probably the complete question/missing part is:"

1 yard in 6 minutes, find the unit rate in feet per second.

Please help with this math question guys! Thank you!
(Please choose one of the provided answers)

I will mark Brainliest :)

Answers

Answer:

i got B

Step-by-step explanation:

bc the second one is negative 2 anf the first pair are all positive.

Which is the scale factor proportion for the reduction?

Answers

The answer is B, hope this helps

Answer:

B

Step-by-step explanation:

Help?
( this is not from a quiz. )
( also, this is science. )

my last question got answered and they told me answers not even related to the question.

Answers

Answer:

A

Step-by-step explanation:

if u count the number of spaces from the zero after the decimal point then make it negative becouse the zeros are behind it

A is the correct answer

evaluate the expression | 10 | =

Answers

Answer:

10

you go positive for negative numbers and stay positive for positive numbers

Answer:

before i answer this, do you still need help with this question???

Step-by-step explanation:

I need help with these

Answers

Answer:

you're correct on the first one, and the second one is 8.

The first one is right I’m pretty sure and if I’m not mistaken the second one is 8

3 ½ x 2/5 *
Three and one half times two fifths. which one is it .
2 points
10/14
14/10
35/4
4/35

Answers

Answer:

Step-by-step explanation:

[tex]3\frac{1}{2}=\frac{(3*2)+1}{2}=\frac{7}{2}\\\\\\3\frac{1}{2}*\frac{2}{5}=\frac{7}{2}*\frac{2}{5}=\frac{14}{10}[/tex]

Which of the following equations is equivalent to
3/4a - 6 =1/4

Answers

is there a picture of the answers to go with this ?
May I see a picture so I can help?

An unused roll of paper towels is shown. What is the volume of the unused roll?

Answers

Answer:

11762.12

-hope this helped have a good rest of your day :)

Step-by-step explanation:

Calculate the area of the base (which is a circle) by using thee equation πr² where r is the radius of the circle. Then, multiply the area of the base by the height of the cylinder to find the volume. ... Since the volume V of a right circular cylinder is given by V = πr²h.

1176.12 hope this helps

What is the equation of the line of reflection in the following coordinate plane?Angle abc has the points (4, -1), (5, 1), and (3, 3) and the other angle has the points (-2, -1), (-1, 3), and (-3, 1)

x = 0
y = 2
x = 1
y = 1

Answers

Answer:Question 1: Option B:

Question 2: Option D:

Solution:

Question 1:

The point on the given line are (2, 4) and (4, –2).

Slope of the given line:

m = –3.

Slope of perpendicular line = –1 ÷ Slope of the given line

Slope of perpendicular line =

Perpendicular line passing through the point (3, 1).

Slope -intercept form using point slope formula,

Option B is the correct answer.

Question 2:

The point on the given line are (0, –3) and (2, 3).

Slope of the given line:

m = 3.

Slope of parallel lines are equal.

Slope of parallel line =3

parallel lines passing through the point (–1, –1).

Point slope formula:

Option D is the correct answer.Question 1: Option B:

Question 2: Option D:

Solution:

Question 1:

The point on the given line are (2, 4) and (4, –2).

Slope of the given line:

m = –3.

Slope of perpendicular line = –1 ÷ Slope of the given line

Slope of perpendicular line =

Perpendicular line passing through the point (3, 1).

Slope -intercept form using point slope formula,

Option B is the correct answer.

Question 2:

The point on the given line are (0, –3) and (2, 3).

Slope of the given line:

m = 3.

Slope of parallel lines are equal.

Slope of parallel line =3

parallel lines passing through the point (–1, –1).

Point slope formula:

Option D is the correct answer.Question 1: Option B:

Question 2: Option D:

Solution:

Question 1:

The point on the given line are (2, 4) and (4, –2).

Slope of the given line:

m = –3.

Slope of perpendicular line = –1 ÷ Slope of the given line

Slope of perpendicular line =

Perpendicular line passing through the point (3, 1).

Slope -intercept form using point slope formula,

Option B is the correct answer.

Question 2:

The point on the given line are (0, –3) and (2, 3).

Slope of the given line:

m = 3.

Slope of parallel lines are equal.

Slope of parallel line =3

parallel lines passing through the point (–1, –1).

Point slope formula:

Option D is the correct answer.Question 1: Option B:

Question 2: Option D:

Solution:

Question 1:

The point on the given line are (2, 4) and (4, –2).

Slope of the given line:

m = –3.

Slope of perpendicular line = –1 ÷ Slope of the given line

Slope of perpendicular line =

Perpendicular line passing through the point (3, 1).

Slope -intercept form using point slope formula,

Option B is the correct answer.

Question 2:

The point on the given line are (0, –3) and (2, 3).

Slope of the given line:

m = 3.

Slope of parallel lines are equal.

Slope of parallel line =3

parallel lines passing through the point (–1, –1).

Point slope formula:

Option D is the correct answer.Question 1: Option B:

Question 2: Option D:

Solution:

Question 1:

The point on the given line are (2, 4) and (4, –2).

Slope of the given line:

m = –3.

Slope of perpendicular line = –1 ÷ Slope of the given line

Slope of perpendicular line =

Perpendicular line passing through the point (3, 1).

Slope -intercept form using point slope formula,

Option B is the correct answer.

Question 2:

The point on the given line are (0, –3) and (2, 3).

Slope of the given line:

m = 3.

Slope of parallel lines are equal.

Slope of parallel line =3

parallel lines passing through the point (–1, –1).

Point slope formula:

Option D is the correct answer.

Step-by-step explanation:

Answer:

x = 1

Step-by-step explanation:

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