Answer:
Domain: (-∞, ∞), or x∈R, or -∞<x<∞
Range: (-∞, ∞), or y∈R, or -∞<y<∞
Step-by-step explanation:
Domain and range are all real numbers. Domain is all values of x, range is all values of y.
Domain: (-∞, ∞), or x∈R, or -∞<x<∞
Range: (-∞, ∞), or y∈R, or -∞<y<∞
If x is the first number, x+2 is the next consecutive even integer. The difference (subtraction) of their squares equals 20. Therefore:
(x+2)²-x²=20...expand this:
x²+4x+4-x²=20
x²+4x+4-x²=20
4x+4=20
4x=16
x=4. Therefore the next consecutive even integer is x+2=6.
To check: 6²-4² must equal 20
36-16=20 check!
Both of these are linear functions:
Distance A is d=2.5h and is proportional to time because the distance is just 2.5 times however many hours you have traveled.
Distance B is d= 2(h-1) + 4. This is not proportional to time but it is a linear function.
3/6=1/2
Explanation:
Half of six is three, so that is one half
The answer A. Census
Census is a survey of <em>every member of a given population</em>. This means that the respondents include all members of the group that you want to study. For example, you want to do a study on the preferred restaurant of the students of a particular school. If you will do a census, you need to get the response of each student in that school.
