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Westkost [7]
2 years ago
12

A bag contains 8 gray glass marbles, 2 gray metal marbles, 4 black glass marbles, and 6 black metal marbles. If one marble is dr

awn at random, what is the probability that it is glass, given that it is one of the black marbles?
A. 1/5
B. 1/3
C. 2/5
D. 1/2
Mathematics
1 answer:
Vera_Pavlovna [14]2 years ago
4 0

Answer:

1/5

Step-by-step explanation:

Total marbles = 20

Black marbles = 10

(10/20) x (4/10)

= (1/2) x (2/5)

= 2/10

= 1/5

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You are driving home on a weekend from school at 55 mi/h for 110 miles. it then starts to snow and you slow to 35 mi/h. you arri
stepladder [879]

Okay lets get started.

I drove 110 miles with speed of 55 mi/hr so the time taken =

time = distance / speed

time = 110 / 55 = 2 hrs For the distance which is covered with 55 mi/hr speed.

Total time for reaching home is 4 hrs 15 minutes. (given in question)

Means rest distance after snow is covered in = 4 hrs 15 minutes - 2 hrs

= 2 hrs 15 minutes = 2 + 15/60 = 2.25 hrs

The speed in snow driving is 35 mi/hr

So distance covered in snow driving is = 2.25 * 35 = 78.75 miles

Hence the total distance = 110 + 78.75 = 188.75 miles : Answer

Hope that will help :)

6 0
3 years ago
Help plzz:))))))))))
sukhopar [10]

Answer:

<em>45 </em>

Step-by-step explanation:

PQ = 45 units

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ch4aika [34]
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hope it helps</span>
3 0
3 years ago
What is the difference between (-5,-5)and (-9,2)
Alecsey [184]

Answer:

Well if you see the graph (-5, -5) is a total negative number that is in the 3 quadrant.

As for (-9,2) it goes to negative to positive.

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