Answer:
D.20
Step-by-step explanation:
4*5=20
because partial 1(a) and partial 1(b) are the same.
Answer:
C. 8 bounces
Step-by-step explanation:
To solve this, you can write an equation before turning it into an inequality:
y = 212*(1/2^x)
(x is bounces, y is height)
Now you can change it into an inequality to fit the height of less than 1:
1 > 212*(1/2^x)
In order for the right side of the equation to be less than 1, 2^x must be greater than 212 (because 212*(1/212) is 1, so if the denominator is greater, it'll be less than 1). 2^8 is 256, which is greater than 212, so that means x is 8.
Because x represents bounces, that means the ball's height will be under 1 foot after 8 bounces.
First we find the mean (average) by adding up all the numbers and dividing by how many numbers there are.
(21 + 10 + 15 + 19 + 8 + 17 + 15) / 7 = 105 / 7 = 15
now we find the absolute value of the difference between the data set and the mean
| 21 - 15 | = 6
|10 - 15 | = 5
|15 - 15 | = 0
|19 - 15 | = 4
|8 - 15 | = 7
| 17 - 15 | = 2
| 15 - 15 | = 0
now we find the mean (average) of these numbers
(6 + 5 + 0 + 4 + 7 + 2 + 0) / 7 = 24/7 = 3.43 <=== the MAD
The answer is -8 because -8*3=-24
