Answer:
Therefore the given vectors are orthogonal for b = 0,±3.
Step-by-step explanation:
If and are two vectors orthogonal, then the dot product of and will be zero.
i.e
If and
Given two vectors are (-18,b,9) and (b,b²,b)
Let
and
Therefore,
=(-18).b+b.b²+9.b
= -18b+b³+9b
= b³-9b
Since and are orthogonal. Then = 0.
Therefore,
b³-9b= 0
⇒b(b²-9)=0
⇒b =0 or b²=9
⇒b=0 or b =±3
Therefore the given vectors are orthogonal for b = 0,±3.
Answer:
-13=4y+3 -3
-16=4y ÷4
-4=y
Step-by-step explanation:
hope it helps ^^
20 ÷ (5 × 2 - 6) + 8=20:(10-6)+8=20:4+6=5+6=11
(20 ÷ 5) × 2 – 6 + 8=4*2-6+8=8-6+8=2+8=10
20 ÷ (5 × 2) – 6 + 8=20:10-6+8=2-6+8=-4+8=4
(20 ÷ 5) × (2 – 6) + 8=4*(-4)+8=-16+8=-8
The first mechanic made $2000 for 10 hours. And the second mechanic made $1000 for 5 hours. So therefore if you add how much money they both made, how much moola would they be charged? just say something if you don't understand it.
Answer: y=-3x/4-1
Step-by-step explanation: