exam Maths Puzzle Numerical Ability

Solve each system by the substitution method.

3x+y=2
-x-3y=6

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exam Other Question

perform the indicated calculations. Write the result in scientific notation.

(6x10^12)(3.2x10^8)
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(1.6x10^7) (3x10^2) The magnitude and direction of vectors u and v are given. Choose the correct magnitude:
u: magnitude 1,850, bearing 125o
v: magnitude 2,960, bearing 25o
W: u + 2v