|2x+3| - 6 =11
|2x+3| = 11+6 = 17
2x+3 = 17 or 2x+3 = -17
2x = 17-3, or 2x = -17-3
2x = 14 or 2x = -20
x = 7 or x = -10
7 or -10
There is no solution
Distributive property
3/4 x 8t - 12 x 3/4=6 x t - 1 x 6
6t - 9=6t - 6
The 6t being on both sides makes the answer. No solution.
Answer:
6 hours, 30 minutes
Step-by-step explanation:
8 is the X variable and y is the -4
Answer:
Stratified sampling
Step-by-step explanation:
Samples may be classified as:
Convenient: Sample drawn from a conveniently available pool.
Random: Basically, put all the options into a hat and drawn some of them.
Systematic: Every kth element is taken. For example, you want to survey something on the street, you interview every 5th person, for example.
Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed.
Stratified: Also divides the population into groups. However, then only some elements of the group are surveyed.
In this question:
Population divided into groups. Some members of each group are surveyed. This is stratified sampling
