Answer:
first one
Step-by-step explanation:
he adds 5(7) to his collection then 8(4) too and after wards he throws away 2
The answer is 15 but I don't think that's right so sorry if it's wrong
Hello,
Let's r the ration
We suppose x ≠0
x=r*(x-2)==>r=x/(x-2)
x+3=r*x==> (x+3)/x=x/(x-2)==>(x+3)(x-2)=x²
==>x²+3x-2x-6=x² ==>x-6=0==>x=6
x-2=6-4=4
x=6
x+3=6+3=9
6=4*3/2
9=6*3/2
Ration 3/2
First term: 4
Answer:
0.866
Step-by-step explanation:
By definition


We know that
. Inverse of sine is arcsin, so, angle
is computed as

Therefore, cosine of
is
cos (30°) = 0.866