Answer:
15 kilometers per day
Step-by-step explanation:
To solve this problem, we can use a rule of three using the information given:
The group of people can travel 210 kilometers in 14 days, and they will travel the same distance each day, so they will travel X kilometers per day:
210 kilometers -> 14 days
X kilometers -> 1 day
210 / X = 14 / 1
X = 210 / 14 = 15 kilometers per day
To reach their goal of 210 kilometers in 14 days, they need to travel 15 kilometers per day.
Answer:
The decibel range is 
Step-by-step explanation:
Let
d -----> the decibel level of the music
we know that
The absolute value of the difference of the decibel level of the music and its average, must be less than or equal to 28 decibels
so
The absolute value that represent this problem is
Solve the absolute value
<em>First solution (positive)</em>
Adds 110 both sides
<em>Second solution (negative)</em>
Multiply by -1 both sides
Adds 110 both sides
therefore
The decibel range is
Yes☺
you are right 7 times 6 is 42 and 7 times. 8 is 56
Answer:
f(x+2)=3x+10
Step-by-step explanation:
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
