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lilavasa [31]
3 years ago
10

A bag contains 5 red marbles , 2 blue marbles, 4 white marbles, and 1 yellow marble. if 2 marbles are chosen in a row , without

replacement, what is the probability of choosing 2 white marbles.
Mathematics
1 answer:
slega [8]3 years ago
8 0
P of 1st white marble = 4/ 12

and P of 2nd white in a row = 3 /11

total = ( 4/12) * ( 3/11)
  = 1/11

hope it helped
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Roxanne graphed this system of equations to find the solution.
Mice21 [21]

Answer:

Option C is correct.

She is not correct as she use the wrong y intercepts when graphing the equations.

Step-by-step explanation:

Given the system of equations:

y = \frac{2}{3}x-5         .....[1]

y = -2x+3         .           .....[2]

equate these two equations we get;

\frac{2}{3}x-5=-2x+3

Add 5 to both sides we get;

\frac{2}{3}x = -2x+8

Add 2x to both sides we have;

\frac{8}{3}x = 8

Multiply both sides by 3 we get;

8x = 24

Divide both sides by 8 we get;

x = 3

Substitute the value of x in [2] we have;

y = -2(3)+3 = -6+3

Simplify:

y = -3

Therefore, the correct solution for this given system of equation is (3, -3)

You can see the graph of these equations below.

5 0
3 years ago
Read 2 more answers
Write an exponential function to model the situation. A population of 470 animals decreases at an annual rate of 12%.
Tamiku [17]
\bf \qquad \textit{Amount for Exponential Decay}
\\\\
A=P(1 - r)^t\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{initial amount}\to &470\\
r=rate\to 12\%\to \frac{12}{100}\to &0.12\\
t=\textit{elapsed time}\\
\end{cases}
\\\\\\
A=470(1-0.12)^t\implies A=470(0.88)^t
5 0
3 years ago
In the figure below, what are the lengths of “a”, “b”, and “c”? Round answers to nearest tenth.
antoniya [11.8K]

Answer:

use a ruler to answer the question

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AlexFokin [52]

Answer:

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6x = 18           Now divide both sides by 6

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Step-by-step explanation:

5 0
2 years ago
Is AB parallel to CD? Explain.
professor190 [17]

Answer:

yes,because parallel line are lines with point which do not meet and the two lines in the plane will not meet nor intersect .

Step-by-step explanation:

obviously a parallel line

8 0
2 years ago
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