Answer:
Step-by-step explanation:
Perhaps you are interested in rationalising the denominator of the given problem. Let's do it.

Answer
A. 129.3
B. The students ages can be any number within the ranges, so having the middle number wont represent the other possible heights.
Step by step
'h' is the number between the surrounding number, the first would be 122.
You need to multiply the hight by frequency of each one,
122x7 =854
126x8=1008
130x13=1690
134x9=1206
138x3=414
Add them up = 5172
5172/40 =129.3
Answer: x= 13
Step-by-step explanation:
X+8= 2x-5
+5. +5
X+13= 2x
-× -×
13=x
Hope this helps
The coordinates of the point labeled A in the graph shown is (2,-2). The 2 is in the x axis while -2 is in the y axis of the graph while point B is in coordinates (-2,-2) and point C is in coordinates (-2,4).
Answer:
Coefficients are 20, 6, 2 and 7
Your variables are your letters in the equations so x and y are your variables in this case.
Your constants are the same as your coefficients I believe (I will include images so you can be sure)
Your terms are what are in between the signs so 20, 6x, 2y and 7
Here you go henderson :)