Answer:
9) C: x=4, y=2rt3
10) A: XY/YZ
11) A: XY/XZ
Step-by-step explanation:
9 - that is a 30, 60, 90 triangle so the ratios will be a, root3a, 2a
10 - tan = opposite / adjacent
11 - cos = adjacent/hypotenuse
Answer:
x=1/3 or x=−3/2
Step-by-step explanation:
7x2+10x−3=x2+3x
Step 1: Subtract x^2+3x from both sides.
7x2+10x−3−(x2+3x)=x2+3x−(x2+3x)
6x2+7x−3=0
Step 2: (3x−1)(2x+3)=0
Step 3: Set factors equal to 0.
3x−1=0 or 2x+3=0
x=1/3 or x= −3/2
That would be the square root of (5^2 + 5^2) = sqrt 50 = 7.07
Answer:
Step-by-step explanation:
Answer:28.16
Step-by-step explanation:
A markup of 220% would bring 11 to 35.20, and a mark down of 20% would bring 35.20 to 28.16.
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