Answer:
FR they deleted my answers also :]
(x+2)*(x-4)
x^2-4x+2x-8
x^2-2x-8
Answer: y=7
Step-by-step explanation:
Use the vertex form to determine the values of
a
,
h
, and
k
and use these values to find the direction the parabola opens, vertex, focus, axis of symmetry, and directrix.
Direction: Opens Down
Vertex:
(
0
,
13
2
)
Focus:
(
0
,
6
)
Answer:
y=1/4x+6
Step-by-step explanation:
Answer:
The chance that there will be exactly 2 heads among the first five tosses and exactly 4 heads among the last 5 tosses is P=0.0488.
Step-by-step explanation:
To solve this problem we divide the tossing in two: the first 5 tosses and the last 5 tosses.
Both heads and tails have an individual probability p=0.5.
Then, both group of five tosses have the same binomial distribution: n=5, p=0.5.
The probability that k heads are in the sample is:

Then, the probability that exactly 2 heads are among the first five tosses can be calculated as:

For the last five tosses, the probability that are exactly 4 heads is:

Then, the probability that there will be exactly 2 heads among the first five tosses and exactly 4 heads among the last 5 tosses can be calculated multypling the probabilities of these two independent events:
