9514 1404 393
Answer:
3/2
Step-by-step explanation:
The scale factor is the ratio of corresponding side lengths.
larger/smaller = (21/2)/7 = 21/14 = 3/2
The scale factor is 3/2.
We have logb(8) = 3 and logb(0.5) = -1.
=> b³ = 8 and 1/b = 0.5
=> b = 2.
Therefore,
logb(4b) = log2(8) = 3.
angle OPQ is external
so 6x-15=2x+18 + 2x-13
6x-15= 4x+5
6x-4x=15+5
2x=20
x=10