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Korvikt [17]
3 years ago
15

1. A scuba diver is swimming around a coral reef 12.25 meters below sea level. He ascends (swims upward) 8.5 meters to look at a

sea turtle. Write an expression to describe the situation. What is his new position? Explain how you wrote the expression and solved the problem.
2. A scuba diver is 9 1/2 feet below sea level viewing some tropical fish. She descends (swims downward) 10 1/2 feet to get a closer look at a manta ray swimming on the sea bottom. Write an expression to describe the situation. What is her new position? Explain how you wrote the expression and solved the problem.
Mathematics
1 answer:
bekas [8.4K]3 years ago
8 0

His new position is 3.75 meters 12.25 - 8.5 = 3.75.

Her new position is 20 ft 9 1/2 + 10 1/2 = 20.

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Winning the jackpot in a particular lottery requires that you select the correct four numbers between 1 and 42 ​and, in a separa
NARA [144]

Answer:

\dfrac{1}{3,357,900}

Step-by-step explanation:

There are

C^{42}_4=\dfrac{42!}{4!(42-4)!}=\dfrac{42!}{4!\cdot 38!}=\dfrac{38!\cdot 39\cdot 40\cdot 41\cdot 42}{2\cdot 3\cdot 4\cdot 38!}=39\cdot 10\cdot 41\cdot 7=111,930

different ways to select the  four numbers between 1 and 42. Only one of this ways is correct (successful to win).

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The  probability of winning the jackpot is

\dfrac{1}{111,930}\cdot \dfrac{1}{30}=\dfrac{1}{3,357,900}

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3 years ago
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If 4 coins are tossed simultaneously what is the probability of getting exactly 3 heads
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No of outcomes =16
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5,367➗4= help please
butalik [34]

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Step-by-step explanation:

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Is there anybody who can help me with this question?please
Butoxors [25]

Answer:

the people would save 12 meters

Step-by-step explanation:

If it is a right triangle that has 45,45,90 angles, Than two side lengths would be the same, so there are two 30 meter side lengths. The path is 48 meters long, and the road would be 60 meters long (30+30), so you subtract 48 from 60, and get 12. You would save 12 meters

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Determine the nth term rule and find the 45th term for the arithmetic sequence with a10=1 and d-6
kari74 [83]

Answer: -209

Step-by-step explanation:

Formula for arithmetic progression

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