Ok so, A + B = 2 x - 2
And A - B = 4 x- 8.
Solving: A = (2x-2+4x-8)/2 = (6x-10)/2= 3x-5
B = (2x-2-4x+8)/2= (-2x+6)/2= -x+3
Happy studying ^-^
Answer:
He can fit 16.4 bricks or 16 1/4 bricks or he can fit 16 full bricks
Step-by-step explanation:
10 = 40/4
40/4 + 1/4 = 41/4
41/4 × 2/2 = 82/8
82/8 ÷ 5/8 = 16 2/8
2/8 ÷ 2/2 = 1/4
Sorry if I'm wrong.
Answer:
After 9 weeks
Step-by-step explanation:
40 + 12x = 220 - 8x
12x + 8x = 220 - 40
20x = 180
x = 180/20
x = 9
The equation for the z-score is
z-Score = (Time - Mean) / Standard Deviation
Given:
<span>mean = 4.6 hours </span>
<span>standard deviation = 1.1 hours</span>
z-Score = -1.2
∴ -1.2 = (x - 4.6) / 1.1
x - 4.6 = -1.32
x = 3.28 hours
The time would be 3.28 hours for a z-score of -1.2.