Part A
The first thing we must do in this case is to hide the slopes of each line.
line m:
m = (- 4-3) / (0 - (- 4))
m = -7 / 4
Line n:
n = (- 2-2) / (3-1)
n = -4 / 2
n = -2
Answer:
Lines m and n are not parallel because their slopes are different.
Part B:
We look for the slope of the K line:
k = (1 - (- 3)) / (4 - (- 3))
k = 4/7
We observe that it is true that:
k = -1 / m
Answer:
The lines are perpendicular.
Answer:
x= -1
y= 2
Step-by-step explanation:
Notice that when x = 0 the value of y is 2/1 so this line "cuts" the y axis at y= 2
y-intercept = 2/1 = 2
When y = 0 the value of x is 1/-1 Our line therefore "cuts" the x axis at x= -1
x-intercept = 2/-2 = 1/-1 = -1
Answer:
Alright, we know that we have to spend 499 dollars on a computer as a base cost. Next, we have to buy 49.99 * x dollars worth of games (since games are 49.99 each), adding up to 499+49.99*x
Alright, so plugging 5 in for x, we get 499+49.99*5=744.95
Since one controller is 24.99, the money for buying a y amount of controllers would be 24.99*y., making the expression 499+49.99x+24.99y
Since in part D, there are no games, we plug these in to get
499+49.99*0++24.99*3=573.97 dollars
Step-by-step explanation:
Answer:
(a) No the conclusion is not justified.
b. No
c. Two defective circuits in the sample
Step-by-step explanation:
Ans: (a) No the conclusion is not justified. What is important is the percentage population of defectives;
the sample proportion is only an approximation. The population proportion
for the new process may be more than or less than that of the old process. We can decide to pick two hundred samples and discover that the number of defects is greater than the previous process
(b)
.For the defectives, the population proportion for the new process may be 0.12 or more,
although the sample of defectives is just 11 out of 100
(c) Two defective circuits in the sample. This is because the probability of having two defects from the 100n samples is less than having 11 defects
4 + n -9 = -9 + 1 + 2n + 12
Answer is n = -9