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Tuyen P.
Tutor for 2 years
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Pre-Calculus
TutorMe
Question:

If 2x+5y=-1 and 3x-2y=27. Then what is the value of x?

Tuyen P.
Answer:

2x+5y=-1 or y=(-1-2x)/5 3x-2y=27 or 3x-2((-1-2x)/5)=27 or 19x=133 or x=7 and y=-3

Geometry
TutorMe
Question:

We are given the side length of c = 12 m and θ = 30 degrees. Find the sides a and b

Tuyen P.
Answer:

b=c/sin30=12/0.5=24(m) a=b*cos30=24*cos30=21(m)

Pre-Algebra
TutorMe
Question:

Solve for x (x+3)(x-1)>0

Tuyen P.
Answer:

x>1 or x<-3

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