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marishachu [46]
3 years ago
15

There are three black marbles and four red marbles in a bag, what is the probability that you will pick a black marble out of th

e bag?
Mathematics
1 answer:
aliina [53]3 years ago
3 0
So in total, there are 7 marbles, (3 black + 4 red = 7 total marbles) and we want to find out how much black marbles are able to come out. So it would be 3/7. :) 
x
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15. What is -130 = -9k - 4
Nostrana [21]

Answer: 14

Work: First, we must get rid of the four from the side it's currently on. So, we are going to add it on both sides. After adding four on both sides, I'll cancel on the side it was on, and the new equation is -126 = -9k. Now, we are going to divide -9 on both sides and yet again, I'll cancel on the side it was on. The answer is k = 14. It's a positive 14 because we divided a negative by a negative, and after doing so, the new number is a positive.

<em>I hope this helps, and Happy Holidays! :)</em>

8 0
3 years ago
Is 22+ 32 = 42 a true statement? Explain.
ivolga24 [154]
No, this is not true, 22+32 =54 this is not a true statement
4 0
4 years ago
Put the equation in standard form with a positive X coefficient. y-5 = -2 (x+6) ​
iVinArrow [24]

The answer is 2x+y+7=0.

3 0
4 years ago
Solve: a + 4 = 48<br> a = 43<br> a = 51<br> a = 44<br> a = 52
andrew11 [14]

Answer:

a = 44 is correct

Step-by-step explanation:

a + 4 = 48

plug in the #'s 1 at a time

43 + 4 = 48

47 = 48  FALSE

51 + 4 = 48

55 = 48  FALSE

44 + 4 = 48  TRUE

52 + 4 = 48  FALSE

Hope this Helps!!!

5 0
3 years ago
svetlanas hair is 4 centimeters long her hair grows 1.5 centimeters per month. Svetlana wants her hair to be less than 16 centim
Temka [501]

Answer:

I guess the question is when her hair will be almost 16cm long.

So she needs to grow hair almost 12 cm of hair. Because 16-4=12

To grow 12cm hair she needs 8 months (12/1.5=8)

So Svetlana needs to cut her hair before 8th month.

7 0
3 years ago
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