3 years ago

Plz help I am bad at this

Mathematics

1 answer:

Vikentia [17]3 years ago

8 0

Your answer is either A or D

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A bag contains 4 blue marbles, 6 red marbles, 3 yellow marbles, and 5 black marbles. What is the probability that you choose two

Ronch [10]

Answer:

.065

Step-by-step explanation:

The total number of marbles is

4 blue marbles+ 6 red marbles+ 3 yellow marbles+5 black marbles=18

P(1st black) = Black/total = 5/18

You keep the marble

The total number of marbles is

4 blue marbles+ 6 red marbles+ 3 yellow marbles+4 black marbles=17

P(2st black) = Black/total = 4/17

Multiply the probabilities together

P(black,black)= 5/18 * 4/17 =10/153=.065359477 =.065

4 0

3 years ago

2. Every month, Jenny and Gopal ________ the orphanages in China. They have been to five orphanages so far.

aleksandr82 [10.1K]

Answer:

2. A

3. B

4. B

5. B

6. C

7. C

8. B

9. D

10. C

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3 years ago

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Solve the word problem. The formula s = gives the side length s of a regular pentagon with perimeter P. What is the side length

Natasha_Volkova [10]

He side length would be 1.5ft.
Hope This Helps and God Bless!

4 0

3 years ago

Dubnium-262 has a half-life of 34 s. How long will it take for 500.0 grams to

dmitriy555 [2]

Answer:

the time taken for the radioactive element to decay to 1 g is 304.8 s.

Step-by-step explanation:

Given;

half-life of the given Dubnium = 34 s

initial mass of the given Dubnium, m₀ = 500 grams

final mass of the element, mf = 1 g

The time taken for the radioactive element to decay to its final mass is calculated as follows;

$1 = 500 (0.5)^{\frac{t}{34}} \\\\\frac{1}{500} = (0.5)^{\frac{t}{34}}\\\\log(\frac{1}{500}) = log [(0.5)^{\frac{t}{34}}]\\\\log(\frac{1}{500}) = \frac{t}{34} log(0.5)\\\\-2.699 = \frac{t}{34} (-0.301)\\\\t = \frac{2.699 \times 34}{0.301} \\\\t = 304.8 \ s$

Therefore, the time taken for the radioactive element to decay to 1 g is 304.8 s.

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3 years ago

What is the volume of this rectangular prism? 5 4 cm 4 3 CT | C 3 5 cm cm

padilas [110]

(5/4)•(4/3)•(3/5)

So you multiply all of them basically

8 0

2 years ago