((r²+7r+10)/3) × (3r-30)/(r²-5r=50)
= Factoring the expression (r²+7r+10) we get (r+2)(r+5)
Then multiply it with the other numerator, we get
= (r+2)(r+5)(3(r-10)
Then we factorise
= (r²-5r-50) = (r+5)(r-10)
Multiplying it with the other denominator, we have;
= 3(r+5)(r-10)
Therefore dividing
(r+2)(r+5)(3(r-10)/(3(r+5)(r-10) we get;
= r+2
Therefore, the correct answer is r+2
The fastest way is to just use a scientific calculator.
To do it without a calculator, use prime factorization.
I'll only do the second one which is the answer.
27 x 8
= 3^3 x 2^3 = 6^3
Which is a perfect cube.
Factoring requires taking out a value out of the expression which result to an expression where the factors are shown. We factor the given expression above as follows:
<span>3y+30
3(3y/3 - 30/3)
3(y - 10)
When you distribute 3 into the parenthesis again you will still obtain the same initial expression. Hope this answers the question. Have a nice day.</span>
D is the correct answer:)
20 degrees
vertical angles are equal, so 5x-80=x
solve for x and you get 20
