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pshichka [43]
3 years ago
5

Nine more than half of a number is 21

Mathematics
1 answer:
pogonyaev3 years ago
3 0
I assume you're looking for the number:
0.5n + 9 = 21
- 9
0.5n = 12
÷ 0.5
n = 24
So the beginning number is 24, hope this helps!
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What’s is a angle defined
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Answer:

the space (usually measured in degrees) between two intersecting lines or surfaces at or close to the point where they meet.

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What multiplies to -75 and adds to 10? <br> thanks
Gelneren [198K]
-5 and 15. -5 times 15 is equal to -75, and they also add to 10.
6 0
3 years ago
What is the correct answer?
murzikaleks [220]

Answer:

160

Step-by-step explanation:

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3 years ago
Colleen has a prepaid phone card with $40 on it. It costs her $0.25 for each minute she spends on the phone. How much money will
Grace [21]

Answer:she will have $25 left .

Step-by-step explanation:

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5 0
3 years ago
In the game of Pick-A-Ball, there are 10 colored balls: 2 red, 4 white, and 4 blue. The balls have been placed into a small buck
MaRussiya [10]

Answer:

The probability of selecting the color of ball that you just selected(a red ball) is P(r) =  \frac{2}{10}

Step-by-step explanation:

From the question we are told that

  The total number of colored balls  is  n  =  10

   The number of red balls is r =  2 red

    The number of white ball is  w =  4

    The number of blue balls is  b  =  4

   The number of balls to be selected is  N  =  2 balls

    The cost of playing picking a ball is  c  =  $10

    The winnings is k =  \$ P(A)

Here P(A) is the probability of obtaining the exact sequence of result  and from the question it  is  P(A) =  0.10

Generally my price according to the question is  

     k =  \frac{0.10 }{10}

=>   k =  0.01

Let assume we selected a red ball

 Generally the probability of selecting a red ball is  mathematically represented as

       P(r) =  \frac{2}{10}

8 0
3 years ago
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