Answer:
5
Step-by-step explanation:
the are is pi times radius times radius
so do the square root of 25, which is 5.
this means that the radius is 5
Answer:
y=1/4x+6
Step-by-step explanation:
The formula for writing a slope equation is y=mx+b. The slope is 1/4, or m, and the y-intercept is 6, or b. Don't worry about the x or y, leave them as variables.
A. For the first two questions, there are 2 choices, true and false. The three questions will have 3 choices. The number of ways that student can complete the test is,
n = 2 x 2 x 3 x 3 x 3
n = 108
Answer: C. 108
B. From 0 to 9, there are 10 digits. There are also 26 and as per given, there are 4 symbols. The number of ways that the code can be made is,
n = 10 x 9 x 26 x 25 x 4
n = 234,000
Answer: C. 234,000
C. In the word, EXPERIMENT, there are 10 letters. Three of which are letter Es. The number of ways that the letters can be arranged is,
n = 10!/3!
n = 604,800
Answer: D. 604,800
D. If the arrangement is not important and that only the combination is important, the number of ways that the instructor can send 4 out of the 11 is,
n = 11C4 = 330
Answer: A. 330
E. If only one of the five keys can start the car then, the probability that the chosen key can start the car is equal to the ratio of the number of key to the total number of keys.
n = (1/5)(100%) = 20%
Answer: C. 20%
F. The events of picking the winning card and picking or choosing the losing card are complementary events such that the sum of their probabilities should be equal to 1 or 100%.
P = 100 - (2.9%)
P = 97.1%
Answer: D. 97.1%
Answer:
a) Marginal probability of X
b) Marginal probability of Y
c) The probability that the drive-through facility is busy less than one-half of the time is P=0.5.
Step-by-step explanation:
The joint density function of probability is:
a) The marginal density of X is
b) The marginal density of Y is:
c) Probability that the drive-through facility is busy less than one-half of the time. This is P(X<0.5).
Answer:
Step-by-step explanation:
(1/2)(m)(n) - 5(p)
This is an expression, not an equation.