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EleoNora [17]
3 years ago
5

WILL MARK BRAINLIEST❕❗✅✔ HIGHEST POINT VALUE GIVEN IF ANSWERED CORRECTLY❕❗❕❗❕❗❕

Mathematics
1 answer:
goblinko [34]3 years ago
3 0

Answer:

The same two approaches can be applied to rational expressions. In the following examples, we'll try both techniques:  multiply, then simplify; and simplify, then multiply. An important difference between fractions and rational expressions, though, is that we must identify any values for the variables that would result in division by 0 since this is undefined. These excluded values must be eliminated from the domain, the set of all possible values of the variable.Some rational expressions contain quadratic expressions and other multi-term polynomials. To multiply these rational expressions, factor the polynomials and then look for common factors. Just take it step by step, like in the example below.Rational expressions are multiplied and divided the same way numeric fractions are. To multiply, first find the greatest common factors of the numerator and denominator. Next, regroup the factors to make fractions equivalent to one. Then, multiply any remaining factors. To divide, first rewrite the division as multiplication by the reciprocal of the denominator. The steps are then the same as for multiplication.

When expressing a product or quotient, it is important to state the excluded values. These are all values of a variable that would make a denominator equal zero at any step in the calculations.

Step-by-step explanation:

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A cell phone charger costs $21. There is a 10% discount this week only. The sales tax is 9%. What is the total of the phone char
Marizza181 [45]

Answer:

$20.60

Step-by-step explanation:

Price before discount = $21

Discount rate = 10% or 0.1

Discount in dollars = 0.1* 21 =  $2.1

Price after discount = $21 -$2.1 = <em>$18.90</em>

If sales tax is 9% or 0.09

amount of tax  will  be = 0.09 * 18.90 = <em>$1.701</em>

Total price of the phone including taxes = Price before tax + tax amount;

Total price = 18.90 +1.701

                 = 20.601

Therefore total price will be $20.60

5 0
4 years ago
Which is a factor of 15xy − 45x − 6y + 18?
Lisa [10]
I see right away that 3 can be factored out of <span>15xy − 45x − 6y + 18.

The quotient is 5xy - 15x - 2y + 6, so that 

</span>15xy − 45x − 6y + 18   =   3(5xy − 15x − 2y + 6)   (2 factors)
<span>
               or                        3 [ 5x(y-1] - 2 [y-3])


</span>
7 0
3 years ago
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The sum of 2 positive integers is 3. the sum of their squares is 5. find the 2 numbers
Kipish [7]

Answer:

2 and 1

Step-by-step explanation:

1 + 2 = 3

(1*1) + (2*2) = 5

5 0
4 years ago
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HELP PLEASE MATH PTS 50
Free_Kalibri [48]

Answer:

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5 0
4 years ago
Name two thing that would like to have in a ratio of 5:1 but not in a ratio of 1:5. Explain your reasoning.
Gekata [30.6K]

Answer:

Alot of CREAMY PENUT BUTTER!!!!!!!!!!!!!!

Step-by-step explanation:

How about no, get trolled lololololololollololololololll

3 0
3 years ago
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