Answer:
6 and 7
Step-by-step explanation:
(a)
To evaluate f(3) substitute x = 3 into f(x), that is
f(3) = 2(3) = 6
(b)
To evaluate gf(3) substitute f(3) = 6 into g(x), that is
g(6) = 6 + 1 = 7
9,11,13,20
20 -9 = 11
Range: 11 so its not 17
11 + 13 = 24
24/2 = 12
Median: 12 so its not 10
9+ 11 + 13 + 20 = 53
53/4= 13.25
Mean: 13.25 so its not 12
IQR: 6.5 so its not 7 or 12
Answer:
15.2
Step-by-step explanation:
From the given figure we can write , using Pythagoras theorem
CT = 38
8x-5= 5x+4
x=3
so you replace X with 3
each equation equals 19
multiply 19 by 2 =38