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Romashka-Z-Leto [24]
3 years ago
7

A bag contains three red marbles and two blue marbles. Marcus reaches in and pulls out a marble, replaces it, but then reaches i

n and pulls out another marble. What is the probability now that they both are blue?
Mathematics
1 answer:
Svetradugi [14.3K]3 years ago
5 0

Answer:

your answer would be \frac{1}{5}

Hope this helps! (:

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3^x-3^(x-2)=A*3^x <br><br> solve for A
ale4655 [162]

Answer:

a=\frac{8}{9}

Step-by-step explanation:

3^x-3x^{x-2} =a3^x

Divide both sides by 3^x:

3^{x-x}-3^{x-x-2}=a

Simplify:

3^0-3^{-2}=a\\a=1-\frac{1}{9} \\a=\frac{8}{9}

3 0
3 years ago
Which system of inequalities is represented by the graph?
Tamiku [17]
The blue line...
(1,2),(3,1)
slope = (1 - 2) / (3 - 1) = -1/2
there is a y int at (0,2.5) or (0,5/2)
it is shaded below the line....and it is a solid line
this inequality is :
y = -1/2x + 5/2
1/2x + y = 5/2
x + 2y = 5
x + 2y < = 5.....this is ur inequality


red line...
(0,4), (1,1)
slope = (1 - 4) / (1 - 0) = -3/1 = -3

there is a y int at (0,4)
it is shaded below the line...and it is a solid line
this inequality is :
y = -3x + 4
3x + y = 4
3x + y < = 4 ...this is ur inequality

summary :
ur 2 inequalities are : 
x + 2y < = 5 and 3x + y < = 4


4 0
3 years ago
A calculator showed the answer to a multiplication problem as 2.8e–4.
jolli1 [7]
2.8 X 10-4. The last one
8 0
3 years ago
An a adult ticket to the zoo costs $20 and a child’s ticket costs $10.How much will it cost for Mr. and Mrs.Brown and their 4 ch
liubo4ka [24]

Answer:

Step-by-step explanation:

you add 20 for mr brown 20 for mrs brown 10 for kid one 10 for kid 2 ten for kid 3 and 10 for kid for giving you a grand total of 80 dollars

5 0
3 years ago
Read 2 more answers
How is 0.009 and 0.9 related
Marysya12 [62]
They are related as they are both decimals, and carry a 9. They are therefore 90th of some strange
3 0
3 years ago
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