MATHEMATICS HIGH SCHOOL

Which shows one way to determine the factors of 12x3 – 2x2 + 18x – 3 by grouping?2x2(6x – 1) + 3(6x – 1)
2x2(6x – 1) – 3(6x – 1)
6x(2x2 – 3) – 1(2x2 – 3)
6x(2x2 + 3) + 1(2x2 + 3)

Answers

Answer 1
Answer: Hello,
Answer A

12x^3-2x²+18x-3
=2x²(6x-1)+3(6x-1)
=(6x-1)(2x²+3)
Answer 2
Answer:

The factorization of  the given expression by grouping yields(6x-1)(2x²+3).

What is factorization?

Factorization is a way in which the common factors of the terms in an  algebraic expression are found. We have the expression 12x^3-2x²+18x-3 in which are to factorize by grouping.

In order to carry out this factorization by grouping we have to perform the following steps;

  • Identify common factors which are 2x^2 and 3
  • Apply the common factors to two groups of the portions of the expression as shown;

12x^3-2x²+18x-3

2x²(6x-1)+3(6x-1)

(6x-1)(2x²+3)

Learn more about factorization: brainly.com/question/6810544

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How do i add fractions and simplify the answer

Answers

There are 3 simple steps to add fractions:
Step1-Make sure the denominators are the same.
Step2-Add the numerators and put the answer over the denominator.
Step3-Simplify the answer if needed.


Simplifying:
You can simplify a fraction by dividing the numerator and denominator by their GCF.

Questions?
what you do as a simply way of saying it is add the top half  and put it into fraction for 
say the question was:
add then simplify-                         2  +  3  =  5       
                                                    10    10 = 10 
so 5\10  ... what you do is divide...  5 divided by 10 is 2... so it would be 1\2 

Does 2/3x+3/4=8 and 8x=87 have the same solution ?

Answers

(2/3)x + (3/4) = 8
           -(3/4)   -(3/4)

(2/3)x = 7.25(3/2)
(3/2)

x = 10.875

8x = 87 Divide both sides by 8

x = 10.875

So yes both sides have the same solution 

Hope this helps :)
yes it does as far as i can see

6. What is 30% of 70? Show your work.

Answers

it is 23.3 percent thats correct

60 min is 20 percent of how many min

Answers

There is 100% total
20% goes into 100% 5 times
If 60 is 20%, multiply 60 by 5 to get 100%
60 x 5 = 300 min

60 times 5 is 300 minutes, The 5 is there because 20% goes into 100% 5 times

Solve for x � x: 11x+10=6x-30

Answers

Answer:

x= −8

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.
X= 8 the explanation is in the picture of how to solve

What is 90% of 81?
X

Answers

Answer:

72.9

Step-by-step explanation:

Fractions method:

81*(90)/(100) because 90/100 is the same thing as 90%

That gives us 7290/100, from 81*90/100

Simplify: =729/10 = 72.9

Decimals method:

81*9 = 729, add in decimal and that's 72.9

Cross-multiplication:

90    100

?         81

This is read as 90 to 100, (as a ratio) so how many to 81? To solve, cross-multiply - 81*90=7290, then divide by 100 to get 72.9.

This is my first answer , hope it helped!

Answer:72.9

Step-by-step explanation:
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