Answer:
Option D.
Step-by-step explanation:
The given expression is (5r + 2)(3r minus 4)
Convert this expression into an algebraic expression.
(5r + 2)(3r - 4)
By distribution law,
= 5r(3r - 4) + 2(3r - 4)
= 15r² - 20r + 6r - 8
= 15r² - 14r - 8
Now convert the algebraic expression into the language form.
15r squared minus 14r minus 8
Therefore, option D is the answer.
I think it is $10 for 20%
Answer:
Step-by-step explanation:
I suggest you watch a video about completing the square if you're not sure what I'm doing.
1.
x^2+2x-3=0
(x^2+2x+1)-3-1=0
(x+1)^2-4=0
Hope this helped,
JoeLouis2
For number 9 the answer would be 7 because in order to find area of objects you multiply length by width. So if the area is 49 and the length is 7, the width would have to be 7.
For number 10 the answer would be 6 because 20 times 6 is 120