My guess is B. hope i help
The answer is 45degrees. i dont know the solution but i had that question before and found the answser on yahoo answers and it was correct
Answer:
B) circumference = 15.7 inches
Step-by-step explanation:
5.0 inches is the diameter
Pi = 3.14 (this is a standard unit for solving circles)
the formula for circumference is:
circumference = diameter x Pi
circumference = 5 x 3.14 = 15.7 inches
Answer:
Step-by-step explanation:
Rewrite X^2+22x=31, leaving space after the "22x:"
X^2+22x = 31
The coefficient of x is 22. Take half of that, obtaining 11.
Square this result: 11^2 = 121.
Write in "+121 -121" after the x term:
X^2+22x + 121 - 121 = 31
Rewrite X^2+22x + 121 as
(x + 11)^2 -121 = 31
Add 121 to both sides:
(x + 11)^2 = 152
Take the square root of both sides:
x + 11 = ±√152 = ±2√38
Finally, x = -11 ±2√38.
This is "solution by completing the square"
