Answer:
30
Step-by-step explanation:
1/2 x (a+b) x h = area
1/2 x ( 40 + x ) x 50 = 1750
1/2 (40 + x )= 1750/50
20 + 1/2x = 35
1/2 x = 35 - 20
x = 15 x 2
= 30
I hope this is right :)
Answer:
25
Step-by-step explanation:
Reduce the expression,if possible, by cancelling the common factors.
Answer:
]
OO
Step-by-step exYYplanation:
UIUHUY
Answer:
(a)
(b)
Step-by-step explanation:
Note that in this problem we have an initial population N = 50, of which 30 fulfill a certain characteristic "m" (belong to the second section). Then, from the population N, a sample of size n = 15 is selected and it is desired to know how many comply with the desired characteristic (second section).
So
Let X be the number of projects in the second section, then X is a discrete random variable that can be modeled by a hypergeometric distribution.
(a)
Therefore, to answer question (a) we use the following equation presented in the attached image:
Where:
Then:
(b)
For part (b) we have:
Answer:
p = 8
Step-by-step explanation:
17 = 3 ( p - 5 ) + 8
Distribute
17 = 3p - 15 + 8
Simplify
17 = 3p - 7
Inverse operations
17 = 3p - 7
+7 +7
24 = 3p
/3 /3
8 = p