Explain how you can find a denominator for 3/5 and 5/8.

PLEASE EXPLAIN

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.

PLEASE HELP, ILL GIVE BRAINLIEST! SIMPLE MATHS.

Consider the triangles below.

2 right triangles. Both triangles have side lengths of 5.5 and 7.8. The hypotenuses are blank.

Imagine using these triangles to construct a figure. What figure would you create?

7.4E Show your work on your own paper, you will have to turn it in at the end of this form.
The distance between the two towns is 120 kilometers. There are approximately 8 kilometers in 5 miles.

Which measurement is closest to the number of miles between these two towns.
A. 75mi
B. 3 mi
C. 192mi
D.117mi

i ish confuzzled plz help

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Find the total surface area of the milk carton.


105 in2105 in2

72 in272 in2

74 in274 in2

126 in2

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HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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what is 34.126 divided by x

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PLZZZZZZ help with this

PLEASE NO LINKS OR FILES ALL IM ASKING IS FOR AN HONEST ANSWER PLASE AND THANK YOU WILL GET BRAILEAST IF CORRCT :))

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A student wanted to use toilet paper to show the distance of one Astronomical Unit, or the distance from the Sun to Earth. They decided to use a scale factor of 1 square of toilet paper = 100,000 km. How many rolls of toilet paper will the student need, if each roll of toilet paper has 500 squares?

A.5 C.3
B.8 D.1

60 x 5?
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True or False?

When rainfall increases, the water level in the lake goes up. Rainfall is the independent variable in this situation. (4 points)

True
False
Question 2 (4 points)
(07.07)
Diana can earn money for the tickets she sells. Which of the following statements describes the variables in this situation correctly? (4 points)

a
The amount of money earned is the independent variable because it affects the number of tickets sold.

b
The amount of money earned is the dependent variable because it affects the number of tickets sold.

c
The number of tickets sold is the independent variable because it affects the amount of money earned.

d
The number of tickets sold is the dependent variable because it affects the amount of money earned.

Question 3 (4 points)
(07.07)
Calvin's plane is flying at a speed of 600 miles per hour. If y represents the distance the plane has traveled and z represents the time it has spent traveling, which of the following equations shows the relationship between y and z? (4 points)

a
y = 600 + z

b
z = 600 + y

c
z = 600y

d
y = 600z

Question 4 (4 points)
(07.07)
It costs $3.56 to buy a pack of pencils. Which of the following equations shows the amount of money needed, x, to buy k packs of pencils? (4 points)

a
x = 3.56k

b
k = 3.56x

c
x = 3.56 + k

d
k = 3.56 + x

Question 5 (4 points)
(07.07)
Christina built a small hot air balloon and recorded the distance it traveled. The table below shows the vertical distance traveled (v) during the first 4 seconds after starting (s).

Elapsed Time
(seconds) Distance Traveled
(feet)
1 1.2
2 2.4
3 3.6
4 4.8
Which of the following equations represents the relationship between the distance traveled and the elapsed time? (4 points)

a
v = 1.2s

b
s = 1.2v

c
v = 1.2 + s

d
s = 1.2 + v

In which set do all of the values make the inequality 2x-1<10 true?

A. {10,15,20}

B. { 5,7,9}

C. {4,6,8}

D.{2,3,4}

struggling :(

RECIPES A recipe that makes 8 jumbo blueberry muffins calls for teaspoons of baking powder. How much baking powder is needed to make 3 dozen jumbo muffins in unite rate?

Group of answer choices

A. 192 tsp

B. 6 3/4 tsp

C. 4 1/2 tsp

D. 2 1/4 tsp

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Will Mark Brainliest! Please help!
An expression is shown below:

2x3 + 10x2 − 4x2y − 20xy

Part A: Rewrite the expression by factoring out the greatest common factor. (4 points)

Part B: Factor the entire expression completely. Show the steps of your work. (6 points)

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