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garri49 [273]
4 years ago
8

Urn 1 contains 7 red balls and 4 black balls. Urn 2 contains 3 red ball and 1 black ball. Urn 3 contains 5 red balls and 1 black

balls. If an urn is selected at random and a ball is drawn, find the probability that it be red.
Mathematics
1 answer:
Marrrta [24]4 years ago
5 0
Choice urn_1: 1/3
    choice R: 5/8        ==>1/3*5/8=5/24
Choice urn_2: 1/3
   Choice R: 3/4        ==> 1/3*3/4=1/4
Choice urn_3: 1/3
   Choice R:4/6=2/3  ==> 1/3*2/3=2/9

Total: 5/24+1/4+2/9=15/72+18/72+16/72=49/72

Read more on Brainly.com - brainly.com/question/1904508#readmore
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Circle the largest decimal in each of the following groups.
ExtremeBDS [4]

A. 0.370

B. 0.44

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A community swimming pool is a rectangular prism that is 30 feet long, 12 feet wide, and 5 feet deep. The wading pool is half as
topjm [15]

Answer:

The volume of the community swimming pool is 4 times greaters than the volume of the wading pool.

Step-by-step explanation:

By definition of rectangular prism, we get the respective formulas for the volumes of the community swimming pool and the wadling pool, respectively:

Community swimming pool

V_{c} = l\cdot w\cdot h (1)

Wading pool

V_{w} = \left(\frac{1}{2}\cdot l \right)\cdot \left(\frac{1}{2}\cdot h\right)\cdot w (2)

Where:

l – Length of the swimming pool, measured in feet.

h – Depth of the swimming pool, measured in feet.

w – Width of the swimming pool, measured in feet.

V_{c} – Volume of the community swimming pool, measured in cubic feet.

V_{w} – Volume of the wading swimming pool, measured in cubic feet.

The ratio of the volume of the community swimming pool to the volume of the wadling pool is:

\frac{V_{c}}{V_{w}} = \frac{l\cdot w \cdot h}{\left(\frac{1}{2}\cdot l \right)\cdot \left(\frac{1}{2}\cdot h\right)\cdot w} (3)

\frac{V_{c}}{V_{w}} = \frac{1}{\frac{1}{4} }

\frac{V_{c}}{V_{w}} = 4

The volume of the community swimming pool is 4 times greaters than the volume of the wading pool.

8 0
2 years ago
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Shelly ran 2 1/4 miles Lynne ran 3 1/8 Miles WhobRan Farther and by how much
ValentinkaMS [17]
Lynne ran farther and by 7/8 miles 

You can tell Lynne ran further because she ran 3 whole miles while shelly only ran 2 whole miles. Now you have to subtract to see how much Lynne had ran more.

You found a common denominator between 8 and 4. 4 can turn into 8. so you multiply 4x2 and 1x2 to get a mixed number of 2 2/8

Now you have to turn 3 1/8 because you cannot subtract 2/8 from 1/8. You can turn the fraction into 2 9/8 because there are 8 pieces in a whole.

2 9/8 - 2 2/8 = 0 7/8

Hope this helps! :)
6 0
3 years ago
If 3/5 of a sum of money is 1200. what is the sum​
inna [77]

Answer:

2000

Step-by-step explanation:

let the sum=x

3/5 of x=1200

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What x value solves the equation?<br><br> 3x – 5 = 1
anzhelika [568]

Answer:

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Step-by-step explanation:

Add 5 to each side.

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Your answer would be x=2.

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