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jok3333 [9.3K]
3 years ago
13

The half-life of a radioactive kind of barium is 3 minutes. How much will be left after 6

Mathematics
1 answer:
Alexus [3.1K]3 years ago
7 0

Answer:

20 Grams will be left after 6 minutes.

Step-by-step explanation:

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A special deck of cards consists of 5 red cards, 20 blue cards, and 25 green cards. Svetlana selects 1 card from the special dec
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Answer:The answer is 50

Step-by-step explanation:

The first step is to add up the numbers in order to get the outcome

5 red + 20 blue +25 green =5+20+25 =50

Step 2

Probability =no of events /no of outcome

We were asked to find the probability of red

Where red represent event

And the summation of red ,green and blue represents outcome .

So probability of red =5/50 = 1/10

Step 3

Recall in the question ,we were told that the card was selected 500 times ,so we multiply the probability of getting red by 500

1/10 *500 =50

Therefore the probability of drawing a red card from the special deck 500 times is 50 .

7 0
3 years ago
Last year, William earned $16.80 per hour working at his job. This year he received a 5% raise. Every day, he swipes his metro c
tester [92]

Answer:c

Step-by-step explanation:

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3 years ago
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Yolanda finished 3/4of 10 1/2mile race how many mile sdid she complete
Mila [183]

Answer:

She completed 7.5 3/8 miles of the race.

Step-by-step explanation:

This can be solved with multiplication.

10 * 3/4 = 7.5

1/2 * 3/4 = 1 * 3/2 * 4 = 3/8

7 0
3 years ago
What is the solution to 1-(2x+4)=-4x+5
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Solve for x by simplifying both sides of the equation, then isolating the variable.
x = 4
8 0
3 years ago
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A number has exactly three factors and is less than 50 what is this number
vfiekz [6]
Answer: 25

Explanation:

The 1st factor is 1.
The 2nd factor is the number itself.
The 3rd factor must be a factor that multiplies itself to get to the number.
The number must be 25, factors = 1, 5, 15

4 0
3 years ago
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