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goldenfox [79]
3 years ago
7

Ellen has a bag with 3 red marbles and 2 blue marbles in it. She is going to randomly draw a marble from the bag 300 times, putt

ing the marble back in the bag after each draw.What is the best prediction for the number of times that Ellen will draw a blue marble?
Mathematics
2 answers:
sweet [91]3 years ago
7 0

Answer:

No. of times Ellen draws a blue marble = 120

Step-by-step explanation:

No. of red marbles = 3

No. of blue marbles = 2

\text{Probability of drawing a blue marble = }\frac{\text{No. of possible outcomes}}{\text{Total no. of outcomes}}\\\\P(B)=\frac{2}{5}\\\\No. of draws (n) = 300\\\text{So, total probability = }n\times P(B)\\\\=100\times \frac{2}{5}=120.

So, the required probability is 120.

Akimi4 [234]3 years ago
4 0

Answer:

The best prediction would be close to 120, not exactly 120.

Step-by-step explanation:

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Use signed numbers to solve. A helicopter descended 1200 feet, rose 800 feet, and then descended 450 feet. What was the net gain
DENIUS [597]
B. Lost 850 ft
800-450= 350
1200-350=850

I hope I helped :D

6 0
3 years ago
Solve the following system: y = x 3 4x y = 18 (6, 3) (3, 6) (â’3, 6) (3, â’6).
Nastasia [14]

The solution of the given equation is (3,6). The correct option is B.(3,6)

<h3>Given equations,</h3>

y=x+3.......(1)\\4x+y=18.....(2)

<h3>How to solve the equations?</h3>

putting the value of y from equation (1) in equation (2) , we get

4x+x+3=18\\5x=18-3\\5x=15\\x=3

substitute the value of x=3 in equation (1) we get,

y=3+3\\y=6

Hence, the solution of given equation is (3,6).

So, the correct option is B.

For more details about the system of equations, follow the link:

brainly.com/question/12895249

4 0
2 years ago
Find the distance between the pair of points. Round your answer to the nearest hundredth. (-8,19) and (3,5)
Amiraneli [1.4K]

Answer:

<h3>The answer is 17.80 units</h3>

Step-by-step explanation:

The distance between two points can be found by using the formula

d =  \sqrt{ ({x1 - x2})^{2} +  ({y1 - y2})^{2}  } \\

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

(-8,19) and (3,5)

The distance between them is

d =  \sqrt{ ({ - 8 - 3})^{2}  +  ({1 9 - 5})^{2} }  \\  =  \sqrt{( { - 11})^{2}  +  {14}^{2} }  \\  =  \sqrt{121 + 196}  \\  =  \sqrt{317}  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \\  = 17.804493...

We have the final answer as

<h3>17.80 units to the nearest hundredth</h3>

Hope this helps you

5 0
3 years ago
3 pounds cost $15. How many pounds can you buy for $45?
morpeh [17]

Answer:

you can buy 9 poundssss

6 0
3 years ago
Read 2 more answers
A score of "3" on a par 5 hole is also known as a(n) _____.
den301095 [7]
The correct answer is "eagle." A score of "3" on a par 5 hole is also known as an eagle. Albatross on the other hand is <span>a score of 3-under par on a hole. </span><span> A birdie is universally known as a score of 1-under par on a hole. An </span>eagle<span> is 2-under par or 3-under par 5.</span>

Here are the choices.
eagle
birdie
bogey
par
7 0
3 years ago
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