12 the answer is 12 I know it
Answer:
9
Step-by-step explanation:
a²+b
Substituting values,
=> (-2)^2+5
=> 4 + 5
=> 9
Answer:
<em>see</em><em> </em><em>explanation</em>
Step-by-step explanation:
f(x)= -2(x²+8x+16)-5

Answer:
30000
Step-by-step explanation:
You round up because it is 5 or < making the 5 a 0 and the 2 a 3. Bringing in the extra 0's makes it 30,000
Let the length of the guy wire be x feet.
cos 51.8 = 400/x
x = 400/cos 51.8 = 646.82 feet.
The answer is 646.82 feet.