Answer:
The correct answer is y = 20x.
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given

Required
Find a
Take log of both sides

Apply law of logarithm

Divide both sides by a

Multiply both sides by -9

Apply law of logarithm

Cancel out log

Rewrite as:

Apply law of indices


Answer: The answer will probabily be "undfined" or "error"
Step-by-step explanation: firtst u need to find the dot product of both a and b (a.b).
then the magnitude of both (√a ,√b)
then u substitute them into the equation
∅=cos-1(a.b/√a x √b)
u will find it to be error bcoz it will be (0/√3 x 0)