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weeeeeb [17]
3 years ago
5

An urn contains four red marbles, and five blue marbles. What is the probability of selecting at random, without replacement, tw

o red marbles?
A. 16/72
B. 20/72
C. 12/72
D. 20/81
Mathematics
1 answer:
Alika [10]3 years ago
8 0

Answer: C. 12/72

Step-by-step explanation: 4/9 (the total of red marbles out of the urn) times 3/8 ( the probability of picking a red marble and how many marbles would be left) = 12/72

Btw I need help answering the rest of the questions if you don’t mind sliding the answers!

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PLS HELP!! WILL MAKE BRAINLIEST!!!!
poizon [28]

Answer:

(86.2,0) is the x-intercept.

Step-by-step explanation:

You can use the slope formula to figure this one out:

Just use two of the points on the table, any of them will work:

(33,-22)\\(52,-33)

\frac{-22-33}{33-52} =\frac{-55}{-19}=\frac{55}{19}

Now you have the slope of the equation, now using the y-intercept equation you can substitute the variables for point of the table and the new slope.:

(71,-44)\\y=mx+b\\-44=\frac{55}{19} (71)+b

Now just solve for b to get the y intercept:

-44=\frac{55}{19}(71)+b\\-44= \frac{3905}{19} +b\\(-\frac{3905}{19})-44=\frac{3905}{19} +b(-\frac{3905}{19})\\   -\frac{4741}{19}=b

Now you have the y-intercept so you just have to plug in 0 to the y spot and it will calculate the x-intercept.

0=\frac{55}{19}x-\frac{4741}{19}\\(+\frac{4741}{19})0=\frac{55}{19}x-\frac{4741}{19}(+\frac{4741}{19})\\\\\frac{4741}{19}=\frac{55}{19}x\\\frac{\frac{4741}{19}}{\frac{55}{19} }= \frac{\frac{55}{19} x}{\frac{55}{19} } \\\frac{431}{5} =x\\or\\86.2=x

And that's the x-intercept.

5 0
2 years ago
Read 2 more answers
A crew must repave a road that is 3/8 miles long. They can repave 1/48 miles per hour. How long will it take the crew to repave
Anika [276]

Answer:

Step-by-step explanation:

3/8 miles long, 1/48 miles per hour

3/8 and 1/48 can have a common denominator, so you make 3/8 into 18/48 by multiplying both the numerator and denmoinator by 6.

18/48 miles long

1/48 per hour

divide: 18/48 divided by 1/48, which turns into 18/48 x 48/1 which equals 18

18 hours

4 0
3 years ago
How do I solve 6-2x=6x-10x+4
seropon [69]
<span>6-2x=6x-10x+4
6-2x=-4x+4
Add 4x to both sides: 6+2x=4
Subtract 6 from both sides" 2x = -2
divide 2 from both sides: x=-1</span>
6 0
4 years ago
Read 2 more answers
If p represents “a number is divisible by 2,” q represents “a number is odd,” and r represents “a number is even,” what does thi
oee [108]

Answer:

B

Step-by-step explanation:

idk y but still ur teacher can't do anything

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3 years ago
A cylinder has a height of 19 feet and a radius of 6 feet. What is the volume. Use 3.14 as pi and round the answer to the neares
Lapatulllka [165]

ANSWER:V≈2148.85.I hope this helps!!

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