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3 years ago

12

4x-5y+2z=-3 6x+4y+9z=8 11x-2y-z=7

1 answer:

Nutka1998 [239]3 years ago

4 0

Answer:

thank you i need that

Step-by-step explanation:

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Answer:

Maria did her job properly. Both gears are perpendicular.

Step-by-step explanation:

Recall that given vectors a and b, they are perpendicular if and only if $a\cdot b$ =0. If $a=(a_1,a_2),b=(b_1,b_2)$ . Then $a\cdot b = a_1b1_+a_2b_2$ .

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3 years ago