Answer:
49
Step-by-step explanation:
4*16-4*2*5+5^2
49
First number is (x).
Second number is (2x+7).
Third number is (x-12).
Their sum is (x+2x+7+x-12).
x+2x+7+x-12 =131
You can simplify this equation
4x-5=131,
4x=136
x=136/4=34 (first number),
(2x+7)=34*2+7=75 (second number)
34-x=34-12 =22(third number)
Check: 34+75+22=131
1/3 ( 3x - 1) = -1/5 - 2/5
1/3 (3x - 1) = -3/5
3x - 1 = -3/5 (3)
3x - 1 = -9/5
3x = -9/5 + 1
3x = -9/5 + 5/5
3x = -4/5
x = -4/15
A relative frequency table is a graph that depicts the popularity or pattern of a certain piece of data based on the population sampled. The value of x will be 85.
<h3>What is a relative frequency table?</h3>
A relative frequency table is a graph that depicts the popularity or pattern of a certain piece of data based on the population sampled.
When we examine the relative frequency, we examine the number of times a certain event happens in comparison to the overall number of events.
We have the following equation for the adult column;


Hence the value of x will be 85.
To learn more about the relative frequency table refer to the link;
brainly.com/question/1809498