Answer:
- 3b(10a - 3b)
Step-by-step explanation:
Given
(5a - 3b)² - 25a² ← this is a difference of squares and factors in general as
a² - b² = (a - b)(a + b), thus
(5a - 3b)² - 25a²
= (5a - 3b)² - (5a)²
= (5a - 3b - 5a)(5a + 3b + 5a) ← simplify parenthesis
= - 3b(10a + 3b)
Step-by-step explanation:
x = -10, y = 10
y= -4x+4
m1×m2 = -1
-4 × m2 = -1
m2 = 1/4
y-y1 = m(x-x1)
y-10 = 1/4(x+10)
y-10 = 1/4x +10/4
(×4)
4y-40=x+10
4y=x+50
x-4y+50=0
12ft = 4 posts
4 x 4
=16 - 4
= 12
There is 4 post on each side but there is an overlap so you must take off 4 so there is no overlap
Therefore there are 12 posts
Answer: Your answer should be 21 I believe.
Step-by-step explanation:
The value of 7 is in the hundreds place
