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Pepsi [2]
3 years ago
8

Please help, need asap

Mathematics
1 answer:
Debora [2.8K]3 years ago
8 0

Answer:

Choice 2

Step-by-step explanation:

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A bag contains 3 red marbles, 5 green marbles and 7 blue marbles. If Janelle picks one marble out of the bag, what is the probab
lisabon 2012 [21]

3+5+7 = 15 total marbles

3 are red

 so she has a 3/15 reduces to 1/5 probability of picking a red one

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PLS HELP ILL GIVE BRAINLY AND 30 PTS
kvv77 [185]

Answer:

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Step-by-step explanation:

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3 years ago
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How many ml of 20 percent acid should be added to pure acid to make 70 ml of 30 percent acid?
Novay_Z [31]

Answer:

61.25%

Step-by-step explanation:

How many ml of 20 percent acid should be added to pure acid

to make 70 ml of 30 percent acid?

:

let x = amt of 20% mixture

then

(70-x) = amt of pure acid

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0.20x + (70-x) =0 .30(70)

0.20x + 70 - x = 21

= 21 - 70

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x = 61.25%

x = +61.25 ml of 20% stuff

8 0
3 years ago
Find the interquartile range and range of 125,17,23,16,21,18,16,15,11,35,18,24,18,3
bezimeni [28]
Interquartile Range = 7.5
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7 0
3 years ago
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Simply the expression given below (3x^3+4x^2+4x-12)+(-5x^3+9x^2-9x+20)
Svet_ta [14]

Answer:

1. Simplify: (4x2 - 2x) - (-5x2 - 8x).

Solution:

(4x2 - 2x) - (-5x2 - 8x)

= 4x2 - 2x + 5x2 + 8x.

= 4x2 + 5x2 - 2x + 8x.

= 9x2 + 6x.

= 3x(3x + 2).

Answer: 3x(3x + 2)

Step-by-step explanation:

6 0
3 years ago
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