Hello :
<span>4x − 3y + 2z = 5 ... (P)
</span><span>x + 6y + 7z = 3 ..... (Q)
the perpendicular vector to the (P) is : v(4,-3,2)
</span>the perpendicular vector to the (Q) is : l(1,6,7)
v <span>⊥ l because : (4)(1)+(-3)(6)+(2)(7= =0
</span>so : (P) ⊥ (Q)
Answer:
30 divided by 5
Step-by-step explanation:
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hope this helps :)