Answer:
A = 3x² - x - 10
Step-by-step explanation:
the area (A) of a rectangle is calculated as
A = length × width , then
A = (3x + 5)(x - 2)
each term in the second factor is multiplied by each term in the first factor.
A = 3x(x - 2) + 5(x - 2) ← distribute parenthesis
= 3x² - 6x + 5x - 10 ← collect like terms
= 3x² - x - 10
Answer = 2
|-------------------|-----------------|
Answer:
x = 9
Step-by-step explanation:
1/2(6x - 10) + 10 = 5x - 13
3x - 5 + 10 = 5x - 13
3x + 5 = 5x - 13
3x + 18 = 5x
18 = 2x
x = 9
Answer:
(X+Y+3)(X+Y-4)
= X^2+XY-4X+XY+Y^2_4Y+3X+3Y-12
=X^2+Y^2+2XY-X-Y-12
Step-by-step explanation:
9514 1404 393
Answer:
(a) 31.5 in²
Step-by-step explanation:
The area of a rhombus is half the product of the lengths of the diagonals.
A = 1/2(d1)(d2)
A = (1/2)(7 in)(9 in) = 31.5 in²
There are 31.5 in² of space in the rhombus for engraving.