Answer:
√7 ≈ 2.646
Step-by-step explanation:
The law of cosines is applicable. It tells you ...
c² = a² + b² - 2ab·cos(C) . . . . . where a, b, c are triangle side lengths, and angle C is opposite side c.
Filling in the given information, you have ...
c² = 2² + 3² - 2·2·3·cos(60°) = 4 + 9 - 12·(1/2) = 7
c = √7 ≈ 2.646
The length of the third side is √7, about 2.646 units.
Each room would be 1 hour because it say that two rooms get painted in two hours <span />
Angles in a triangle add up to 180 therefore:
Angle CAB = 180 - 60 - 50 = 70
Angles on a straight line add up to 180 therefore the missing angle is:
180 -70 = 110
Answer is D
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The expression xy-2, when x=3 and y= -4, becomes (3)(-4)-2, or -14 (answer)
the expresion 3x^2*y - 4 becomes 3(3)^2*(-4) - 4, or 27(-4) - 4, or -108 - 4 = -112 (answer)
Leave Timmy out of this, since it seems he didn't really do anything. ;)
It takes about 3 minutes because when you round 3.4 repeating it's closer to three minutes instead of four minutes
