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olga nikolaevna [1]
3 years ago
7

Eliza is playing roulette on her computer for play money. To play, she “spins” a wheel that consists of 18 red numbers, 18 black

numbers, and 2 numbers that are neither red nor black. Before spinning, she bets $7.60 that the number will come up black. If she wins, she gets back the amount she bet plus $7.60, and if she loses, she must forfeit the amount she bet. If she spins the wheel many times, making the same bet each time, how much can she expect to lose per spin, on average?
Mathematics
1 answer:
sergij07 [2.7K]3 years ago
8 0

Answer:

.40

Step-by-step explanation:

usatestprep

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Answer:

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2 years ago
Write the equation for the horizontal line that contains point G(3, 4).
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3 0
3 years ago
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Hello! Please help.
valina [46]

1 -

3 cups left.

2-

David biked  a total of 158 miles (option C)

Why?

- First exercise:

To solve the problem we need to consider that for each 1/2 cup of cornmeal, we will have 6 corn muffins.

So, calculating we have:

TotalMuffins=24=4*6\\\\UsedCups=\frac{1}{2}*4=2Cups

We can see that, if each 1/2 cups can give us 6 corn muffins, 2 cups can give us 24 corn muffins.

CupsLeft=5cups-2cups=3cups

Hence, there are 3 cups left.

- Second exercise:

We can solve the problem by multiplying or adding the fractions according to the number of dots assigned to each one.

So, calculating we have:

FirstDay=10miles*2=20miles\\SecondDay=10\frac{1}{2}miles=10.5miles\\ThirdDay=11miles*3=33miles\\FourthDay=11\frac{1}{2}miles*4=11.5miles*4=46miles\\FifthDay=12miles*3=36miles\\SixthDay=12\frac{1}{2}miles=12.5miles

Total=20miles+10.5miles+33miles+46miles+36miles+12.5miles\\Total=158miles

Hence, we have that David covered a total 158 miles. (Option C)

Have a nice day!

5 0
3 years ago
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Answer:

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Step-by-step explanation:

∵ A triangle having sides a, b and c is called,

Acute : If a² + b² > c² or a² + c² > b² or b² + c² > a²,

Obtuse : if a² + b² < c² or a² + c² < b² or b² + c² < a²

Right : a² + b² = c² or a² + c² = b² or b² + c² = a²,

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Similarly,

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Hence, PQR is a right triangle.

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