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4 years ago

Last question please help((: #10

Mathematics

2 answers:

GrogVix [38]4 years ago

6 0

We would use the sine function because we have an angle the hypotenuse, and the unknown opposite side.

sin(x)=opposite/hypotenuse
sin(60)=x/30
√3/2=x/30 (cross multiply)
30*√3/2=x (divide numerators and denominators by 2)
x=15√3 ft.
So the correct answer is A

Hope this helps

ikadub [295]4 years ago

3 0

I think it is d becuz u 60-30 = 30 and devide that by 2 which is 15 qwhich the square in the corner is an equal of 2

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Step-by-step explanation:

We can assume that both marbles are withdrawn at the same time. We will define the probability as follows

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We have 10 marbles in total. The number of different ways in which we can withdrawn 2 marbles out of 10 is $\binom{10}{2}$ .

Consider the case in which we choose two of the same color. That is, out of 5, we pick 2. The different ways of choosing 2 out of 5 is $\binom{5}{2}$ . Since we have 2 colors, we can either choose 2 of them blue or 2 of the red, so the total number of ways of choosing is just the double.

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Probability of losing $\frac{(\binom{5}{1})^2}{\binom{10}{2}}\frac{5}{9}$

Let X be the expected value of the amount you can win. Then,

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