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12345 [234]
3 years ago
8

A jar contains 3 red, 4 blue, and 2 white marbles. What is the probability that a marble drawn at random is not red?

Mathematics
2 answers:
raketka [301]3 years ago
8 0

Answer:

Probability that a marble drawn at random is not red = \frac{2}{3}.

Step-by-step explanation:

Given : A jar contains 3 red, 4 blue, and 2 white marbles.

To find  : What is the probability that a marble drawn at random is not red.

Solution : We have given that

Red marbles = 3.

White marbles = 2.

Blue marbles = 4

Total marbles = 9

Marbles that are not red = white + blue =2+4 = 6.

Probability that a marble drawn at random is not red = \frac{Number\ of\ marbles\ not\ red}{Total\ that\  number\ of\ marbles}.

Probability that a marble drawn at random is not red = \frac{6}{9}.

Probability that a marble drawn at random is not red = \frac{2}{3}.

Therefore, Probability that a marble drawn at random is not red = \frac{2}{3}.

sukhopar [10]3 years ago
6 0
2/3 is <span>the probability that a marble drawn at random is not red.</span>
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In 2015, the population of a small town in Florida is 95. If he population increases 15% every year, approximately what will the
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The population is increasing every year. so we use exponential growth function

y=a(1+r)^x

Where 'a' is the initial population

r is the rate of increase

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Initial population a= 95

r= 15%= 0.15

x = 2023 - 2015 = 8 years

Plug in all the values and find out y

y=a(1+r)^x

y=95(1+0.15)^8

y = 290.607

The population in 2023 is 291

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3 years ago
Find the length of a square with an area of 169 in2.
mrs_skeptik [129]

Find the length of a side of a square with an area of 169 in^2.

Answer:

D. 13 in

Step-by-step explanation:

A square has sides of equal length.

A = L^2 where:  A = area  and  L = side

L^2 = 169

L=√169

L=13 in^2.    

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3 years ago
What is a constant term or variable term that makes 5x + 20 = 5x + ? have one solution?
In-s [12.5K]

Answer:

It would be 20

Step-by-step explanation:

because 5x+20 = 5x + <u>         </u>

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Drag each set of column entries to the correct location in the matrix equation. Not all sets of entries will be used. A biker ne
ANEK [815]

Answer:

The matrix equation is \left[\begin{array}{ccc}1&1&1\\1&-1/2&0\\0&2&-1\end{array}\right]=\left[\begin{array}{c}120&35&20\end{array}\right]

Step-by-step explanation:

* Lets change the story problem to equations

- The distance between the starting point and checkpoint 1 is x

- The distance between checkpoint 1 to checkpoint 2 is y

- The distance between checkpoint and the finish line is z

- The total distance for the race is 120 miles

∴ x + y + z = 120 ⇒ (1)

-The distance from the starting point to checkpoint 1 is 35 miles

 more than half the distance from checkpoint 1 to checkpoint 2

∵ The distance from the starting point to checkpoint 1 is x

∵ The distance from checkpoint 1 to checkpoint 2 is y

- x is more than half y by 35

∴ x = 35 + (1/2) y ⇒ subtract (1/2) y from both sides

∴ x - (1/2) y = 35 ⇒ (2)

- The distance from checkpoint 2 to the finish line is 20 miles less

 than twice the distance from checkpoint 1 to checkpoint 2

∵ The distance from checkpoint 2 to the finish line is z

∵ the distance from checkpoint 1 to checkpoint 2 is y

- z is less than twice y by 20

∴ z = 2y - 20 ⇒ add 20 to both sides

∴ z + 20 = 2y ⇒ subtract z from both sides

∴ 2y - z = 20 ⇒ (3)

* Now lets write the three equations

# x + y + z = 120 ⇒ (1)

# x - (1/2) y = 35 ⇒ (2)

# 2y - z = 20 ⇒ (3)

- Now lets write the matrix equation that models this situation

∴ \left[\begin{array}{ccc}1&1&1\\1&-1/2&0\\0&2&-1\end{array}\right]=\left[\begin{array}{c}120&35&20\end{array}\right]

6 0
2 years ago
Read 2 more answers
Georgia has 168 songs in her playlist, while Scarlet has 266 songs in her playlist. Which statement correctly compares the
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Answer:

168<266

Step-by-step explanation:

7 0
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