Y is 8
And X is -4 because 8 divide by -2 is -4
HOPE it helps!!!!!!!
plz mark as a brainliest answer!!!!!
Answer:
7.
Step-by-step explanation:
Calculate the means for each group:
mean of 0-4 is 2
mean of 5-9 is 7
mean of 10-14 is 12
Mean = (Sum of frequencies * mean) / sum of frequencies
= required mean = [ (2(2) + 1(7) + 2(12)] / (2+1+2)
= 35/ 5
= 7.
Step-by-step explanation:
A) 9
B) 23
C) -1
D)x^2 -x -6
E) 4x-1
F) x^2 -5x -5
56=8+(9-1)d
48=8d
d=6
t22=8+(22-1)6
T22=134