Answer:
The probability is 0.1312
Step-by-step explanation:
Here, let us set up a binomial system
From the question, 54% ride a bike
Let p = people that rides a bike
54% = 54/100 = 0.54
p = 0.54
q = 1 - p = 1 -0.54 = 0.46 ( 46% do not ride bikes)
Now, for the binomial system, we have
P(X = 15) = 30 C 15 • p^15•q^15
We have;
30 C 15 * 0.54^15 * 0.46^15
= 0.131200268998
The probability is 0.1312
Answer:
( - 3 ' - 4 )
Step-by-step explanation:
Answer:
(-2, 4) U [7, ∞)
Step-by-step explanation:
The domain of a function is the set of inputs at which the functions is defined. Usually determined by the x-values. In this problem we have the graph of a function. At x = -2 the function is not defined, we can see this by taking a look at the opened circle at this value in the graph. Then the function takes values until x = 4. Notice that at x = 0 the function is defined. At x = 0 to left the function takes the value y = 0 and at x = 0 to the right the function takes the value y = -1. Then the function takes value at x = 7 (including this value because of the closed circle in the graph) and beyond. Therefore, the correct answer is:
(-2, 4) U [7, ∞)
-8x+7-6(x-1)=-6x-(7x-5)+6
-8x+7-6x+6=-6x-7x+5+6
use gemdas to add like terms
-14x+13=-13x+11
+14x. +14x
13= x+11
-11 -11
2=x
