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diamong [38]
3 years ago
7

Precalculus VECTORS. Please help me and also explain how to solve . Thank you

Mathematics
1 answer:
Andreyy893 years ago
8 0

You have two vectors: \vec{a}=(2,-1) and \vec{b}=(3,3).

In order to find the sum \vec{a}+\vec{b} of vectors \vec{a} and \vec{b}, you should add corresponding coordinates:

\vec{a}+\vec{b}=(2,-1)+(3,3)=(2+3,-1+3)=(5,2).

Answer: correct choice is C.

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Answer:

∠EFG=(3× 11.2+17)º = 50.6°

∠LMN= (12×11.2−5)º = 129.4°

Step-by-step explanation:

We know that if two angles are supplementary two each other sum of these two angles is equal to 180°.

It is given that  ∠EFG and ∠LMN are supplementary angles.

Therefore,  ∠EFG +∠LMN = 180°

Given that: ∠EFG=(3x+17)º and ∠LMN=(12x−5)º

⇒ (3x+17)º  + (12x−5)º =180°

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⇒ x = 168°/15

x =  11.2°

Then, ∠EFG=(3× 11.2+17)º = 50.6°

Also, ∠LMN= (12×11.2−5)º = 129.4°

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