<span>To factor out the expressions, we need to find two integers where the sum is equal to the coefficient of the second term and the product of the integers is equal to the constant.
1. d2 + 18d + 81
x1 = 9 : x2 = 9
9+9 = 18
9x9 = 81
</span><span>(d + 9)2
</span>
<span>2. d2 + 22d + 121
</span><span>x1 = 11 : x2 = 11
11+11 = 22
11x11 = 121
</span>(d + 11)2<span>
</span>3. r2 – 49
x1 = -7 : x2 = 7
-7 + 7 = 0
-7x7 = -49
<span>(r – 7)(r + 7)</span>
(1)
- Law of sines to solve for
:
- The sum of the measures of interior angles of any triangle is
. Use this to solve for
:
- Law of cosines to solve for
:
(2)
- Sum of interior angles:
- Law of sines to solve for
:
(3)
- Sum of interior angles:
- Law of sines to solve for
and
:
Don't forget to provide units for the side lengths solved for above!
divide 33 photos into two groups so the ratios 4 to 7
Answer:
a and b have the same index notation , hence its the same number so answer is 2x3x5 = 30
There are 5 couches and 4 love seats in the club house.