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Rudik [331]
3 years ago
8

Describe how to add or subtract rational expressions with like denominators.

Mathematics
2 answers:
Veronika [31]3 years ago
8 0

Answer:if the bottoms are the same keep the the sme

Step-by-step explanation:

Reil [10]3 years ago
3 0

Answer:

1. ½ + ½ = ²/2 = 1

2. ⅝ - ⅜ = ²/8 = ¼

Step-by-step explanation:

Rationals are can take the form of a fraction or decimals.

They are part of a whole.

In add or subtracting Rationals having the same denominator, the operation seems easy and fast.

Let's consider some examples:

ADDITION OF RATIONALS

1. ½ + ½ = ²/2 = 1

How:

In Working with Rationals having thesame denominator, you take the sum of the NUMERATOR and pick just one of the DENOMINATOR.

NUMERATOR: 1+1 = 2.

DENOMINATOR: 2

Operations: 2 ÷ 2 = 1.

2. ⅜ + ⅞ = 10 / 8

How:

2

Numerator: 3+7 = 10

Denominator: 8

Operations : 10/8 = 5/4

SUBTRACTION:

1. ⅝ - ⅜ = ²/8 = ¼

How:

Numerator: 5-3 = 2

Denominator: 8

Operations = 2/8 = ¼

2. ¾ - ¼ = ²/4 = ½

How:

Numerator: 3-1 = 2

Denominator: 4

Operations : ²/4 = ½

Enjoy mathematics!

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What is the average speed of a baseball that is thrown 90 feet in 2 seconds?
vovangra [49]
B. 45 feet/second

To find out how fast it can go in 1 second, we divide it by 2
90 divided by 2 is 45, so the average speed of a baseball that is thrown 90 feet in 2 seconds is 45 feet/second
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Nathan usually drinks 38 ounces of water per day. He read that he should drink 60 ounces of water per day. If he starts drinking
lesya692 [45]

Answer:

58\%

Step-by-step explanation:

First, we need to find how much extra water Nathan drinks.

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To find the percent increase:

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7 0
3 years ago
Julian is trying to decide on a future career. He has narrowed down his choices to orthodontist, sound engineering technician, p
Alenkasestr [34]

Percentage is the way to represent the part of a whole in a fraction of 100.The greatest percent of the increase in the number of jobs from 2006 to 2016 is orthodontist which is 10.94 percent.

<h3>Given-</h3>

In the given table we have to find out the percent of the increase in the number of each job to find out the greatest one.

<h3>Percentage</h3>

Percentage is the way to represent the part of a whole in a fraction of 100.

1-Orthodontist-

In 2006 the total number of orthodontists was 9206.

In 2016 the total number of orthodontists was 10214

Percent of increase in this job is,

p_{1} =\dfrac{10214-9206}{9206}\times100

p_{1} =10.94%

Hence, percent of the increase in this job is 10.94 present.

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In 2006 the total number of Sound engineer technicians was 16125

In 2016 the total number of Sound engineer technicians was 17864

Percent of increase in this job is,

p_{2} =\dfrac{17864-16125}{16125}\times100

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Hence, percent of the increase in this job is 10.78 percent.

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In 2006 the total number of Police officers was 648982

In 2016 the total number of Police officers was 719041

Percent of increase in this job is,

p_{3} =\dfrac{719041-648982}{648982}\times100

p_{3} =10.79%

Hence, percent of the increase in this job is 10.79 percent.

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In 2006 the total number of Editors was 122273

In 2016 the total number of Editors was 124135

Percent of increase in this job is,

p_{2} =\dfrac{124135-122273}{122273}\times100

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Hence, percent of the increase in this job is 1.52 percent.

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Evaluate the expression,<br> if x = 6, y = 8, and z = 4.<br> 6x - y<br> N
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Subtract:

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Answer = 7

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