H(x) would be (x - 3)(x + 10)
= x^2 + 7x - 30
Answer:
-3/4
Step-by-step explanation:
If you take two points, the rise is 3. Also, the change in y is 4. Since the line is going downwards from left to right, it has to be negative.
X = [-b +- sqrt(b^2-4ac)]/2a
Answer:
0.1587
Step-by-step explanation:
Let X be the commuting time for the student. We know that . Then, the normal probability density function for the random variable X is given by
. We are seeking the probability P(X>35) because the student leaves home at 8:25 A.M., we want to know the probability that the student will arrive at the college campus later than 9 A.M. and between 8:25 A.M. and 9 A.M. there are 35 minutes of difference. So,
= 0.1587
To find this probability you can use either a table from a book or a programming language. We have used the R statistical programming language an the instruction pnorm(35, mean = 30, sd = 5, lower.tail = F)
Answer: 500 tiles
Explanation:
20cm = 0.2m
Find the area of the floor:
Area = 5 x 20 = 100m
Find how many tiles are needed:
Let x be the number of tiles needed
(0.2)(x) = 100
x = 100/0.2
x = 500