1; 19
–1; 19
3; 6
–3; 1
Answer:
Option B. x = -1, 19
Step-by-step explanation:
The given equation is x² - 18x = 19
We can get the value of x by factorizing the expression or by quadratic formula.
We will try to factorize the equation first. If we find no factors then we will apply quadratic formula to get the value of x.
x² - 18x - 19 = 0
x² - 19x + x - 19 = 0
x(x - 19) + 1(x - 19) = 0
(x - 19)(x + 1) = 0
x = 19, -1 will be the solutions.
So there is no need to apply quadratic formula.
Option B. x = -1, 19 is the answer.
A) 0.26
B) 0.42
C) 0.75
D) 0.91
E) 1.00
2. If 8 components are drawn at random from the container, the probability that exactly 3 of them are defective is ?
A) 0.147
B) 0.203
C) 0.300
D) 0.375
E) 0.750
B.The 90% confidence interval is narrower than the 95% confidence interval.
C. The 90% confidence interval is wider than the 99% confidence interval.
D.The 99% confidence interval is narrower than the 68% confidence interval.
When making a statistical inference about the mean of normallydistributed population based on the samples drawn from the population the statement that is true and correct all else being equal is (option C)
Option C indicates that the 90% confidence interval is wider than the 99% confidence interval.
Other qualities of a Normally Distributed Population are:
Learn more bout Normally Distribution Population at;
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B. -2
C. 2
D. -6
Answer:
Step-by-step explanation:
let the number be x
=7+x
=3(7+x)
=3(7+x)-2
13=3(7+x)-2
solving for x we have
13=21+3x-2
21+3x-2-13=0
collect like terms we have
21-2-13+3x=0
6+3x=0
6=-3x
x=6/-3
x=-2
The answer is B
B. -2
y = 2x + 6
What is the point of intersection
Answer:
So the point of intersection would be -x=2x+6
and then we'll subtract 2x on both sides and get -3x=6
this will result in x=-2
Then we'll substitute that into y=-x, so y=2
Therefore the point of intersection is (-2,2)
Hope I helped, have a nice day :)
Answer:
Its True
Step-by-step explanation:
Hope this helped have a nice day