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irina1246 [14]
3 years ago
15

15 balls are in bag of red and blue balls if 6 is red how many red balls must be added to bag so that probability is 2÷3​

Mathematics
2 answers:
Brut [27]3 years ago
6 0

Answer: 12 red balls must be added

Step-by-step explanation:

Starting out with 15 balls, 6 red implies 9 blue. If blue remains 9, then we expect red to be 18 for a probability at 2/3. 18-6 = 12

sasho [114]3 years ago
6 0
I think 12 is the correct answer
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A Blimp is 400 feet in the air. There is an angle of depression of 40 degrees to a football stadium. How far is the Blimp from t
VMariaS [17]

Answer:

Step-by-step explanation:

The diagram of the stadium and the blimp is shown in the attached photo. A right angle triangle, ABC is formed. Angle A is alternate to the angle of depression. This mean that they are equal. So angle A =40 degrees.

The distance of the the Blimp from the stadium is x feet which is the hypotenuse of the triangle.

Applying trigonometric ratio,

Sin 40 = 400/x

xsin40 = 400

x = 400/sin40 = 400 / 0.6428

x = 622.3 feet

5 0
3 years ago
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Answer:

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3 years ago
In body paragraph 1, how many times is evidence (‘SAY”) cited? B) Same article? Yes or No
marshall27 [118]

Answer:

Down below hope it helps :)

Step-by-step explanation:

The evidence "SAY" was only written once. It wasn't by the same article, the writer introduces two separate articles.

Kinda confused by this question but I think that's the answer.

5 0
3 years ago
What is greater, 3/5r 4/10?
DanielleElmas [232]
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7 0
3 years ago
I need to find the surface area for this one pls help me
Alex

Step-by-step explanation:

so, you got the volume but don't know how to find the surface area ? that is strange for me. what's the problem ?

the surface of a cube or rectangular prism consists of 6 sides that split (for a rectangular prism) into 3 pairs of equal sides :

top and bottom

left and right

front and back

all we need to do is calculate the areas of these 6 rectangles and add them up. that's it.

in our case

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front and back : 5×4 × 2 = 40 in²

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40 + 32 + 40 = 112 in²

4 0
2 years ago
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