Answer:
B
Step-by-step explanation:
2x^2+8x+8=0
x^2+4x+4=0
(x+2)^2=0
so B, 1 solution
It depends on what size the cylinder is.
Answer:
Part A: <u>3x + 4</u>
Part B: Two times 9 more than a number.
Step-by-step explanation:
For Part A, 4 more means add 4. 3 times a number means 3 times a random number which is X. For part B, you can just follow the same steps.
The answer would be C and D
Determine the number of standard deviations that needs to be subtracted from or added to the mean in order to arrive to the values given.
(1) 45 = 61.2 - 21.4n ; n = 0.757
(2) 78 = 61.2 + 21.4n ; n = 0.785
(3) 62 = 61.2 + 21.4n ; n = 0.037
(4) 90 = 61.2 + 21.4n ; n = 1.346
(5) 31 = 61.2 - 21.4n ; n = 1.4
Therefore, the answer for 45 and 78 is approximately 1 (letter b), for 62 is zero (letter a), and for the last two numbers, more than 1 or two (letter c).