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3 years ago

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What is the probability of drawing a spade each time a card is drawn from a deck of 52 cards 3 times, if replacement occurs each

time? a.1/2197 b.11/850 c.1/64 d.3/4

1 answer:

yulyashka [42]3 years ago

7 0

Answer:

c

Step-by-step explanation:

13/52*13/52*13/521=2197/140608 (1/64)

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aliya0001 [1]

Answer:

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3 years ago

Three numbers are in ratio 2:5:7. <br> The middle number is 75. What are the other two numbers?

Tatiana [17]

Answer:

First number - 30

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Step-by-step explanation:

2/5 of 75 would be 30, so it is the answer.

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3 years ago

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What is square root of 22

zmey [24]

Final Answer: $4.69$

Steps/Reasons/Explanation:

<u>Step 1</u>: You will need to find the perfect square root of a number that is less than $22$ . So $4^{2}$ is $16$ .

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3 years ago

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16% of 50 peaches is 8 peaches.

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3 years ago

The mass of an electron is approximately 9.11 × 10 -28 grams. Find the mass of 401,000,000 electrons. 3.65311 × 10-19 grams 3.65

NNADVOKAT [17]

Answer:

$Total\ Mass = 3.65311 * 10^{-19}$ grams

Step-by-step explanation:

Given

$Mass = 9.11 * 10^{-28}g$

Required

Determine the mass of 401,000,000 electrons

To do this, we simply multiply the mass of 1 electron by the number of electrons.

This gives:

$Total\ Mass = 401,000,000 * 9.11 * 10^{-28}$

$Total\ Mass = 3653110000 * 10^{-28}$

Express 3653110000 as a standard form

$Total\ Mass = 3.65311 * 10^9 * 10^{-28}$

Apply law of indices:

$Total\ Mass = 3.65311 * 10^{9-28}$

$Total\ Mass = 3.65311 * 10^{-19}$

Hence, the mass of 401000000 electrons is $3.65311 * 10^{-19}\ grams$

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3 years ago