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Darina [25.2K]
3 years ago
14

There are three marbles in a bag. One is red and two are black. What is the probability of picking a black marble first, putting

it back in the bag and then picking a black marble?
Mathematics
1 answer:
Maru [420]3 years ago
6 0

Answer:

well for me I think

Step-by-step explanation:

2/3×2/3

4/9

since they are replacing the black marbles back

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Andy is one fourth as old as his grandfather Who is 76 years old right equation to determine whether Andy is 19 or 22 years old
abruzzese [7]
Well, the equation would be 76*\frac{1}{4} 
 or 76/4. Either works. 76/4 is 19. So Andy would be 19 years old.

I hope this helped :)
3 0
3 years ago
Factor the polynomial expression 15x^2 - 2x - 8
AVprozaik [17]

Answer:

(3 x + 2) (5 x - 4)

Step-by-step explanation:

Factor the following:

15 x^2 - 2 x - 8

Factor the quadratic 15 x^2 - 2 x - 8. The coefficient of x^2 is 15 and the constant term is -8. The product of 15 and -8 is -120. The factors of -120 which sum to -2 are 10 and -12. So 15 x^2 - 2 x - 8 = 15 x^2 - 12 x + 10 x - 8 = 5 x (3 x + 2) - 4 (3 x + 2):

5 x (3 x + 2) - 4 (3 x + 2)

Factor 3 x + 2 from 5 x (3 x + 2) - 4 (3 x + 2):

Answer: (3 x + 2) (5 x - 4)

4 0
3 years ago
PLS HELP ITS DUE AT 11:10
myrzilka [38]

Answer:

Scalene.

Step-by-step explanation:

It's scalene because non of the triangle's sides are congruent.

4 0
2 years ago
Omar has a gift card for $40.00 at a gift shop. Omar wants to buy a hat for himself for $13.50. For his friends, he would like t
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Answer:

A. 3.25x + 13.50 ≤ 40

The number of bracelets is x. It's a variable.

The 13.50 is a constant.

The total needs to be less than or equal to 40 because that's all the money he has.

6 0
2 years ago
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I will need a picture
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