Answer:
<h2><u><em>
I think 2 + n</em></u></h2>
Step-by-step explanation:
<h2><u><em>
Step1: Distribute parentheses -(-2)-(-n)</em></u></h2><h2><u><em>
Step 2: Then Apply minus - plus rules and u will get -(-a)=a</em></u></h2><h2><u><em>
step 3: = 2+n</em></u></h2>
Vertex form:
y-k=a(x-h)^2
h=-2,k=-20,y=-12 when x=0
thus;
-12+20=a(0+2)^2
8=4a
a=2
Equation:
y+20=2(x+2)^2
y+20=2(x^2+4x+4)
f(x)=2(x^2+4x+4)-20
f(x)=2x^2+8x+8-20
f(x)=2x^2+8x-20
If is an integer (a whole number), then the expression represents an even number, because even numbers are the multiples of 2. The expressions 2 n − 1 and 2 n + 1 can represent odd numbers, as an odd number is one less, or one more than an even number.
Answer: 26
Work: 90 - 64 = 26
This is the rule for complementary angles that are equal to 90 degrees.
