Answer:
1,2,4,8
Step-by-step explanation:
1 x 40 = 40
1 x 72 = 72
2 x 20 = 40
2 x 36 = 72
4 x 10 = 40
4 x 18 = 72
8 x 5 = 40
8 x 9 = 72
Answer:
6 ways.
Step-by-step explanation:
a, b, c
a, c, b
b, a, c
b, c, a
c, a, b
c, b, a
Answer:
- 12x +9y ≥ 510
- y ≤ 2x
- y ≥ 25
Step-by-step explanation:
Phoebe earns 12x for her yard weeding, and Richie earns 9y for his dog walking. They want the sum of these earnings to be at least 510, so the first constraint inequality is ...
12x +9y ≥ 510
__
Richie plans to walk no more than 2x dogs, since y is the number of dogs he walks, the second constraint is ...
y ≤ 2x
__
Richie will walk at least 25 dogs, so ...
y ≥ 25
Answer:
And the margin of error with this one:
Step-by-step explanation:
Assuming that the parameter of interest is the sample mean 
. And we can estimate this parameter with a confidence interval given by this formula:
(1)
For this case the confidence interval is given by (1.9, 3.3)
Since the confidence interval is symmetrical we can estimate the sample mean with this formula:
And the margin of error with this one:
