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Alchen [17]
4 years ago
12

If a bag has 40 red and blue marbles and a quarter of them are red what is the probability of picking a blue one

Mathematics
1 answer:
ella [17]4 years ago
7 0
Total marbles = 40 & 1/4  (or 0.25) are, then RED = 40x 0.25 = 10

If RED = 10 then BLUE = 30

P(picking one blue) = 30/40 = 3/4 =0.75
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2x divided by x+5 less than or equal to 0
coldgirl [10]
It is more than 0, because you cancel the x, and you get 2+5, which is 7
4 0
3 years ago
Could someone answer the top one
nika2105 [10]

Step-by-step explanation:

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I have found all the missing angles.

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3 0
3 years ago
PLEASE CAN ANYONE HELP!!!
DiKsa [7]

Answer:

x = 3

y = 4  

hey, I am not 100% sure of the certainty of my answers, I am using what I remember about that topic but I do not know if it is right or wrong, I hope I have helped you, I did what I could.

Step-by-step explanation:

-3x + 2y = 23

5x + 2y = -17

X solution:

(you cancel the y)

-3x = 23

5x = -17

(you combine all the values above with those below)

2x = 6

(solve the ecuation normaly)

x = 6/2 = 3

Y solution:

(you replace the x)

-3(3) + 2y = 23

5(3) + 2y = -17

-9 + 2y = 23

15 + 2y = -17

(you combine all the values above with those below)

6 + 4y = 6

(solve the ecuation normaly)

4y = 0

y = 4  

(I do not really know if the answer here is 0 or 4 since when passing the 4 to divide it would be 0/4 and I do not understand very well how that is solved)

6 0
3 years ago
Read 2 more answers
Can someone help me. What number is it can anyone help?
Thepotemich [5.8K]

Step-by-step explanation:

2k=3×4

2k=12

2k/2=12/2

k=6

5 0
2 years ago
Read 2 more answers
3)show work ,Use a form of d=rt to solve. Steven’s kite rose into the air at the rate of 5 fee per second. How many feet did it
Alex

Answer:

800 ft

Step-by-step explanation:

2/3 minutes = 2/3 min * 60 sec/min = 40 sec  = t

5 ft/sec = r

d= r * t  = 5 ft/sec * 40 sec = 800 ft

4 0
4 years ago
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