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AVprozaik [17]
4 years ago
8

Help on the equation.

Mathematics
1 answer:
nadya68 [22]4 years ago
8 0
You plug in 3 where you see x and 4 where you see y

3*3+1/4*4^2
9+1/4*16
9+4
13

Remember to follow PEMDAS (order of operations)
parenthesis, exponents, multiply, divide, add, subtract<span />
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Can someone answer with steps and explanation? Thanks.
12345 [234]

Answer:

BC=9\sqrt{3}\approx15.59\text{ units}

Step-by-step explanation:

Since Segment BOA is a diameter:

m\angle ACB=90

Arc Ac and Arc CB are in a ratio of two to four. Since Segment BOA is a diameter, Arc ACB measures 180°. Letting the unknown value be <em>x</em>, we can write that:

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\displaystyle m\angle A=\frac{1}{2}\left(\stackrel{\frown}{CB}\right)=\frac{1}{2}\left(120)=60

Therefore, ΔABC is a 30-60-90 triangle. Its sides are in the ratios shown in the image below.

Since AC is opposite from the 30° triangle, let AC = <em>a</em>.

We are given that AC = 9. Hence, <em>a</em> = 9.

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BC=9\sqrt{3}\approx15.59\text{ units}

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