Answer:
It is -3 degrees Celsius per 1 hour
Step-by-step explanation:
Answer: m∠f = 90, m∠g= 30, and m∠e = 60
<span>y = 3x² + 18x
factor out the leading coefficient
y = 3(x²+6x)
Complete the square
coefficient of the x term: 6
divide it in half: 3
square it: 3²
use 3² to complete the square:
y = 3(x²+6x + 3²) - 3·3²
= 3(x+3)² - 3·3²
= 3(x+3)² - 27
vertex (-3, -27)</span>
The answer is 80.5 ... 805 / 5
