Answer:
It travels 1/5 mile in one second
Step-by-step explanation:
1/10 * 2 = 2/10 = 1/5
Since the bolt of lightning travels 1/10 mile in half a second, then to find how much it travels in one a second you simply multiply 1/10 by 2, which equals 2/10, which can be simplified to 1/5.
1) find the mean,
20+10+30+20+50+30+40+20/8= 27.5
2) Find the distance of each value from that mean
20- 7.5
10- 17.5
30- 2.5
20-7.5
50- 22.5
30- 2.5
40- 12.5
20- 7.5
3) Find the mean of those distances
7.5+17.5+2.5+7.5+22.5+2.5+12.5+7.5/8=10
The Mean absolute deviation for this data set is 10.
Answer:
(x-8)(x+4)/(x+4) = (x-8)
Step-by-step explanation:
x+4 cancel out and you get x-8
Answer:
A) To solve the ratio, cross multiply then divide.
B)
A / 5/8 = 3/5 / 2/3
Cross multiply:
(5/8 x 3/5) =( A x 2/3)
3/8 = 2/3A
Divide both sides by 2/3:
A = 3/8 /2/3
A = 3/8 x 3/2
A = 9/16
A = 1/2h(b1 + b2)
2A = h(b1 + b2)
2A/h = b1 + b2
b1 = 2A/h - b2