W= P / 2 - L
Width= Perimeter over 2 subtracted by length
Solution is to substitute 2 for x and u should get 92.
Answer:
The answer for part B is I think 92 and 92. And for part A she could get 97 and 97 as the test average would be 92.
Step-by-step explanation:
I kinda explained it in the answer yeah but I hope that helps.
A geometric sequence is a sequence in which there is a common ratio between any two consecutive terms. In this case if X:Y:Z are in the ratio of 2:7:8 the multiplying by a constant k, we have X=2k, Y= 7k and Z=8k.
Then if X, Y-12, Z form a Geometric sequence, it means X/Y-12=Y-12/Z which is the same as 2k/7k-12=7k-12/8k if we cross multply, we get
16k²= 49k²-168k +144
33k²-168k+144 =0 solving for k
k = 4 or 1.091 if we take the whole number to find the values of X,Y and z,
X= 8, Y= 28 and Z=32
