Answer:
How to Find Common Denominators
If you are trying to add or subtract fractions with different denominators, you’ve come to the right place! In order to add or subtract fractions, we have to have common denominators. Sometimes, though, you’re given a problem that looks like this:
Those are definitely not common denominators! In order to get the denominators the same, follow these steps:
1. List multiples of both numbers. Start by listing four multiples for each number.
4: 4, 8, 12, 16
2: 2, 4, 6, 8
2. Look at the lists you’ve made. Underline any numbers that are on both lists.
4: 4, 8, 12, 16
2: 2, 4, 6, 8
3. Look for the smallest underlined number (known as the least common multiple, or LCM). This is your common denominator.
Common denominator: 4
4. Multiply the numerator and denominator by the factor that it would take to get to your common denominator…like this:
and this:
For this multiplication, the first number you use is the fraction you are changing, and the second number comes from the answer to this question: “what number would I multiply the denominator by to get to the common denominator?” For the first fraction, your denominator is already your common denominator, so you simply multiply it by 1/1. We multiply by 1 (or a fraction equaling one) because this does not change the amount of the fraction, it just changes the name of the fraction. For the second fraction, you would multiply by 2/2 because your denominator (2) needs to be multiplied by 2 to reach the common denominator of 4.
Now that you have common denominators, you can simply add the fractions together. Remember, when you add fractions, the numerators (top numbers) add and the denominators (bottom numbers) stay the same!
Your new problem would look like this:
Once you add them, you should get 5/4
If you know how to simplify this (by changing it into a mixed number), please do so. If not, please review how to deal with improper fractions.
Want one more practice problem with finding common denominators? This time, we’ll do a subtraction problem. Here it is:
Follow the same steps. They are:
1. List the multiples for each number.
3: 3, 6, 9, 12
4: 4, 8, 12, 16
2. Look at the lists you’ve made. Underline any numbers that appear on both lists.
3: 3, 6, 9, 12
4: 4, 8, 12, 16
3. Look for the smallest underlined number (least common multiple, or LCM). This is your common denominator.
Common denominator: 12.
4. Multiply the numerator and denominator of each fraction by the factor that it would take to get to your common denominator. Think about it like this:
What do you multiply by 3 to get to 12? Well, we know that 3 x 4 = 12, so we know we need to multiply by 4:
Now, we do the same thing with 1/4 to get:
What do you multiply 4 by to get to 12? Well, we know that 4 x 3 = 12, so we know we're going to multiply by 3. That looks like this:
Now we have both of our fractions with common denominators, so we can subtract! Remember, in a subtraction problem, the numerators subtract but the denominators stay the same. It looks like this:
Now see if you can fill in the answer. If you got 1/12, you're right!
Step-by-step explanation:
Answer:
Common denominator: 40
Step-by-step explanation:
Using LCM (Lowest Common Multiple) method, if you add in the values of the given denominators of the equation, the answer should be 40.
Which table could represent a proportional relationship?
A.
x 1 2 5 11
y 1,300 2,600 6,500 14,300
B.
x 1 2 5 11
y 1,150 2,250 4,500 12,300
C.
x 1 2 5 11
y 900 1,800 3,500 7,640
D.
x 1 2 5 11
y 950 1,900 4,500 11,200
Answer:
a
Step-by-step explanationporq si
:
Answer:
a
Step-by-step explanation:
need help last question and stumped T-T
my brain isn't working and it's due in 10 minutes
30 points and will mark brainliest
Answer:
[tex]x=25, y=15, z=16[/tex]
Step-by-step explanation:
Honey to flour
4:5
[tex]\frac{20}{x} =\frac{4}{5}[/tex]
[tex]4x=100[/tex]
[tex]x=25[/tex]
[tex]\frac{12}{y} =\frac{4}{5}[/tex]
[tex]4y=60[/tex]
[tex]y=15[/tex]
[tex]\frac{z}{20} =\frac{4}{5}[/tex]
[tex]5z=80[/tex]
[tex]z=16[/tex]
Which question(s) could be answered by collecting data that has variability? Click on each statistical question. To change an answer, click again. How many people are in Mr. Moore's geometry class? What proportion of the voters want a new city park? What was the temperature in the school lunchroom at noon today? How many people own snow blowers in Boston? On average, how old are the cats that live in Kyle's neighborhood?
To pass her test, Tori needs to answer at least 65% of the questions correct. If there were 60
questions and she got 42 correct, did she pass? All work MUST be shown to justify your
answer.
Step-by-step explanation:
To obtain score of 80% on entire exam means the student have to answer
(80/100)×80 = 64 correct answers
Student have already answered 75% of the first 60 questions correctly meaning
(75/100)×60=45 correct answers from first 60 questions
Remaining correct answers s/he have to answer
64-45=19
So from remaining 20 questions s/he have to answer 19 correct questions that is
20 × (x/100) = 19
x = 19 ×(100/20)
x = 95%
GIVING BRAINLIEST
Look at the stem-and-leaf plot. What is the median of the numbers?
A) 36
B) 83.5
C) 84.45
D) 100
Answer:
B) 83.5
Step-by-step explanation:
Sana nakatulong
A sphere has a radius of 5 feet. Find the volume of the sphere. Leave your answer in terms of pie. Then use 3.14 for pie and round the volume to the nearest 10th. Volume in terms of pie=? Volume in using 3.14=?
The solution is, The Volume is 523.6, of the sphere has a radius of 5 feet.
What is volume?In mathematics, volume is the space taken by an object. Volume is a measure of three-dimensional space. It is often quantified numerically using SI derived units or by various imperial or US customary units. The definition of length is interrelated with volume.
here, we have,
Given,
r = 5 ft
pi = 3.14
Formula
the volume of sphere is:
V = 4/3 * 3.14 * r^3
Solution
V = 4/3 * 3.14 * 5^3
V = 4/3 * 3.14 * 125
V ≈ 523.59878
V ≈ 523.6 m^3
as, we get,
V≈523.59878
and 5 or more raise the score so the 9 makes the 5 into 6 and drop all of the other numbers.
Hence, The solution is, The Volume is 523.6, of the sphere has a radius of 5 feet.
To learn more on volume click :
brainly.com/question/1578538
#SPJ2
Please help me if you can. Please also write how you got the answer thank you.
First state your variables:
a = Andile
Everything is related to Andile and therefore we do not need to make this equation more difficult by adding in more variables.
a + (a - 40) + 2(a - 40) = 380
Expand brackets and simplify:
2a - 40 + 2a - 80 = 380
4a - 120 = 380
4a = 500
Then solve for 'a' by dividing by both sides:
a = $125
Now we know Andile's pay we can find Taylor's quite easily:
t = a - 40
t = 125 - 40
t = $85
Taylor earned $85.
Please mark as brainliest :)
Hope this helps :)))
-4(x - 4) = -44
pls show steps
Answer:
15
Step-by-step explanation:
-4(x - 4) = -44
expand
-4*x + -4*-4 =-44
-4x + 16 = -44
-4x = -44 -16
-4x = -60
x=-60/-4
x=15
Name the marked angle in 2 different ways.
The marked angle in 2 different ways will be ∠HLK or ∠KHL and ∠KHL = ∠HLJ - ∠KLJ.
What is an angle?The angle is the distance between the intersecting lines or surfaces. The angle is also expressed in degrees. The angle is 360 degrees for one complete spin.
The analysis of mathematical representations is algebra, and the handling of those symbols is logic.
The marked angle in 2 different ways will be given as,
The first way will be
∠HLK or ∠KHL
The second way will be
∠KHL = ∠HLJ - ∠KLJ
The marked angle in 2 different ways will be ∠HLK or ∠KHL and ∠KHL = ∠HLJ - ∠KLJ.
More about the angled link is given below.
https://brainly.com/question/15767203
#SPJ2
what is the last one number 12
Help me please please I really need this
Answer:
area of triangular logo = ½ × base × height
= ½ × 8 × 11
2
= 22 in²
Answer:
22
Step-by-step explanation:
If you multiply the base times height, which would be 8 * 5 1/2, You get 44. Then multiply that by 1/2 to get the area, and you get 22.
Hope this helps!
Can somebody please help me. I have to classify if the graph or equation is quadratic or not quadratic
PLEASE HELP ASAP IM CONFUSED!!
Answer:
B. 1152
Step-by-step explanation:
First you do the base. 24 x 24 is 576. Now you do each triangle. 12 x 24 = 288 and 288 divided by 2 is 144. 144 x 4 = 576. 576 + 576 = 1152.
I hope this helps! <3
Find the perimeter and the area of the polygon with the given vertices.
T (2,7), U (2,9), V (5,9), W (5,7)
The perimeter is __ units.
The area is ___ square units.
Answer:
Step-by-step explanation:
TU , UV , VW, TW are the sides
As points T and U have same x-coordinate, length of TU will be given by the difference of y-coordinate
TU = 9 - 7 = 2 units
As points U and V have same y-coordinate, length of UV will be given by the difference of x-coordinate
UV = 5 - 2 = 3 units
As points V and W have same x-coordinate, length of VW will be given by the difference of y-coordinate
VW = 9 -7 = 2 units
As points W and T have same y-coordinate, length of WT will be given by the difference of x-coordinate
WT = 5 - 2 = 3 units
TU = VW = 2 units
UV = WT = 3 units
So, TUVW is a rectangle
Area = length *width = 3* 2 = 6 square units
Perimeter = 3 + 2 + 3 + 2 = 10 units
substitute the variable and solve the problem
d=6 and k=2
(d+k) x 2
answer:
expression or equation:
Answer:
16
Step-by-step explanation:
d =6
k =2
( 6 + 2) × 2
8 × 2 = 16
Translate the sentence into an inequality.
The sum of 4 and y is less than 15. GIVE BRAINLIEST IF RIGHT
!!!!!
Answer:
4+y < 15
the best i can do
Step-by-step explanation:
Evaluate.
10–6
10–4
=
1011000
HELP PLEASE
HELP PLEASE HELP PLEASE
Step-by-step explanation/ Answers
because you have 5% possibilities and a total of 100%. You divide
100 by 5 and then you get 20 so that is for question 5
for question 6 it would be 80 because 100 - 20 is 80
for question 7 it will be 40 because 20 + 20 is 40
hopes this helps
Pls Help Me.
Use the table to solve the equation −6x>18
Table:
x: -5 -4 -3 -2 -1
-6x: ? ? ? ? ?
The solution of the inequality is: __________
Answer:
x>-3 because that's how it goes
I really don't get what I'm supposed to do...
Answer:
check below
Step-by-step explanation:
1. c = 68-27 = 41
2. t = 7.9+1.5 =9.4
3. a = 21*3 = 63
4. (multiply whole equation by 8) 8r+6=7, r=1/8
5. x = 25.2/4.2 = 6
6. b = 75/15 = 5
7. A. 6C = 99
B. C = 99/6 = $16.50
The solution represents the cost of one ticket.
Mr. Poole made snacks in separate gift bags. He gave one each to the 36 seventh grade students going on the field trip. Then he gave 10 bags to the students in Mrs. Bark's class for decorating the trophy cases. Next he gave 7 to the students in Mrs. Drowe's class for helping during the school play. Mr. Poole had 2 snacks left. How many snacks did he make?
A. 19
B. 36
C. 54
D. 55
I need this NOW WHO EVER ANSWERS CORRECTLY RIGHT NOW I WILL MARK BRAINLIEST BUT IF YOU SPAM I WILL REPORT YOU! Find the value of x.
Answer:
[tex]114^{o}[/tex]
Step-by-step explanation:
Angles in a triangle add up to 180 so 180 - 34 - 32 = 114
help plz i need it really quick
Answer:
20 messages per hour
Step-by-step explanation:
160 messages in 4 hours
160/4
= 20
20 messages per 1 hour
Answer: 2.08333333333 That should be the answer I think
Step-by-step explanation:
Can sum1 answer this for me pls?
Answer:
a fish boul has no cubic inches its round
Step-by-step explanation:
Please help ❤❤❤
The mark up at a clothing store is 28%. If the whole sale price (the price the store pays) is $13 what price will they charge their customers?
Answer:
9
Step-by-step explanation:
Noah scored 20 points in a game. Mai's score was 30 points. The mean score for Noah, Mai, and Clare was 40 points. What was Clare's score? Show your work.
I need this answer ASAP.
Answer:
Clare's score was 70.
Step-by-step explanation:
N = 20
M = 30
C = ?
Mean = (Sum of all values)/3
40 = (20 + 30 + c)/3
40 = (50 + c)/3
50 + c = 120
c = 70
Answer:
70
Step-by-step explanation:
Let's think about this backwards. The mean of all 3 points is 40, so that is our answer. We instead of dividing would multiply. We would multiply by 3 'cause that's how many numbers there are. We would get 120. Finally, we would
3
have to subtract. We will do this problem:
20 + 30 = 50
120 - 50 = 70
So, we get our answer of 70!
__
Let's check our work!
20 + 30 + 70 = 120 = 40
3 3
__
Let's explain our work propproperly:
First, I took the mean and multiplied it by three because we have Noah, Mai, and Clare. Next, I added 20 and 30 to get an answer of 70 which is the answer. In conclusion, Clare's points are 70 points.
PLEASE HELP
Select all the equations equal to 5x+30x-15x
A.5(x+6x-3x)
B.(5+30-15) * x
C.x(5+30x-15x)
D.5x(1+6-3)
E.5(x+30x-15x)
A, B, and D I hope this helps :)
I'm confused I put 13-x and it said incorrect?? HELP!
Answer:
Maybe -12?
Step-by-step explanation:
Because sometimes variables on their own symbolize 1, so we can subtract 13 from 1 to get -12.
Please answer, I will give you Brainliest!!
James correctly answered 85% of the 60 problems on his math test. How many questions did James answer correctly?
Answer:
52
Step-by-step explanation:
I REALLY NEED HELP FAST! Name the marked angle in 2 different ways.
Answer:
Step-by-step explanation:
Answer:
<opn and <npo
