Answer:
x = sqrt(13) - 4 or x = -4 - sqrt(13)
Step-by-step explanation:
Solve for x:
x^2 + 8 x + 3 = 0
Hint: | Solve the quadratic equation by completing the square.
Subtract 3 from both sides:
x^2 + 8 x = -3
Hint: | Take one half of the coefficient of x and square it, then add it to both sides.
Add 16 to both sides:
x^2 + 8 x + 16 = 13
Hint: | Factor the left hand side.
Write the left hand side as a square:
(x + 4)^2 = 13
Hint: | Eliminate the exponent on the left hand side.
Take the square root of both sides:
x + 4 = sqrt(13) or x + 4 = -sqrt(13)
Hint: | Look at the first equation: Solve for x.
Subtract 4 from both sides:
x = sqrt(13) - 4 or x + 4 = -sqrt(13)
Hint: | Look at the second equation: Solve for x.
Subtract 4 from both sides:
Answer: x = sqrt(13) - 4 or x = -4 - sqrt(13)
Okay, so for the second paper thing, it's B and F (the second one and the last one)
That's all I really know! I'm taking Alg. 1 right now XD
Good luck!
Answer:
Mean
Step-by-step explanation:
Mode:
Before adding 97 = 38
After adding 97 = 38
Mean:
Before adding 97 = 513/9 = 57
After adding 97 = 610/10 = 61
Median:
38, 38 , 38, 43, 54, 56, 70, 79, 97
Before adding 97 = 54
38, 38 , 38, 43, 54, 56, 70, 79, 97, 97
After adding 97 = 54 +56/2 = 110/2 = 55
Each yard has 3 feet
4 yards * 3 feet = 12 feet
12 feet + 2 feet = 14 feet
14 feet * 3 = 42 feet or 14 yeards
Answer:
80%
Convert fraction (ratio) 48 / 60 Answer: 80%
