Answer:k=1,k=-2,k=
Step-by-step explanation:
Given two vectors


Distance between them is given by

squaring both side



k=1

angle between u and v is 90 i.e. orthogonal

=0
2+k=0
k=-2

angle between u & v is 





=0
k=
Is the goal to simplify? You just need to multiply the exponents for each factor:
(2z^2)^(-3)
= 2^(-3) x z^(2 x -3)
= (1/2)^3 x z^(-6)
= (1/8) x (1/z)^6
= 1/(8z^6)
<span> x+2a=4x
2a = 3x
a = 3x/2
a =1.5x</span>
9514 1404 393
Answer:

Step-by-step explanation:
The decimal form of a ratio is found by dividing the numerator by the denominator. You will find this reduces to the fraction 21/34, which has a 16-digit repeat when expressed as a decimal.
Using a calculator with suitable precision, you can see all of the repeating digits:
