Answer:
D is the correct answer.
Step-by-step explanation:
When given points, one way to tell if it is a function is to see if the x-coordinate changes. If all the x-coordinates are different, then it is a function. If there is a group of x-coordinates that are the same, then you need to check the y-coordinate. If the y-coordinate is the same with the same x-coordinate, then it is still a function [Example: (12, 15), (12, 15) is a function, but (12, 15), (12, 18) is not)
1 sec=1/10 m
5 min=300 sec
thus, 1/10 *300
=30 m
He will walk 30m in 5 min
Answer:
(x+4)(2x+1)
Step-by-step explanation:
1. 2x^2+8x+x+4 ----- split the second term in 2x^2 + 9x+4 into two terms.
2. 2x(x+4)+(x+4) ----- Factor out common terms in the first two terms, then in the last two terms.
3.(x+4)(2x+1) ------ factor out the common term x+4
Answer:
P(A or B) represents the probability that a customer will buy either a mouse or a reptile at the pet store. So, there is a 20%, or 1 out 5 chance that a customer will buy either one when they come in to purchase a pet.
Step-by-step explanation:
Probability represents the fraction of the desired number of outcomes over the total number of outcomes. In the case of the pet store, their total outcomes can be the purchase of a mouse, reptile or bird. We don't know how much of each animal they have, however, they tell us that the probability that a customer will buy either a mouse OR a reptile is 0.20. This means that the probability of buying a mouse and the probability of buying a reptile are added together to equal 0.20 or 20% which is also 1/5.