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HACTEHA [7]
3 years ago
14

A hat contains four balls. The balls are numbered 2, 4, 4, and 7. One ball is randomly selected and not replaced, and then a sec

ond ball is selected. The numbers on the two balls are added together.
A fair decision is to be made about which of three sizes of ice cream cone will be ordered, using the sum of the numbers on the balls. The sizes are small, medium and large.
Which description accurately explains how a fair decision can be made in this situation?

A. If the sum is 6 or 9, a small cone will be ordered.
If the sum is 8, a medium cone will be ordered.
If the sum is 11, a large cone will be ordered.

B. If the sum is 6, a small cone will be ordered.
If the sum is 8 or 9, a medium cone will be ordered.
If the sum is 11, a large cone will be ordered.

C. If the sum is 6 or 8, a small cone will be ordered.
If the sum is 9, a medium cone will be ordered.
If the sum is 11, a large cone will be ordered.

D. If the sum is 6, a small cone will be ordered.
If the sum is 8 or 11, a medium cone will be ordered.
If the sum is 9, a large cone will be ordered.
Mathematics
1 answer:
melamori03 [73]3 years ago
5 0

Answer: The answer is B

Step-by-step explanation:

Took the quiz :D

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11 =< x < -1

Step-by-step explanation:

-2 >= (5 - x)/3 > 2

<=> -6 >= 5 - x > 6

<=> 11 =< x < -1

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Answer:

<h2>A. </h2><h2>\sqrt{9} \:  \: . \:  \:  \sqrt{4}</h2>

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2 years ago
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Robins eat 12 worms in the morning on an average sunny day. On rainy days, robins average 4 fewer worms per morning. Last week,
gayaneshka [121]
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HOPE IT HELPSSSSSS
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3 years ago
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1. Find the function f (x) =ax2 + bx+ c whose graph contains the points (1, 2), (-2,-7), and (2, -3). Write the system of equati
IRISSAK [1]

Answer:

1. The function is -2x^2 + x + 3.

Step-by-step explanation:

1. The point at (1,2) gives the equation:

a * (1^2) + 1b + c = 2

a + b + c = 2

The point at (-2,-7) gives the equation:

a * (-2^2) + (-2b) + c = 7

4a - 2b + c = -7

The point at (2,-3) gives the equation:

a * (2^2) + 2b + c = -3

4a + 2b + c = -3

Hence, all three equations are:

a + b + c = 2  

4a - 2b + c = -7  

4a + 2b + c = -3

Now, subtract the second equation from the third equation to get:

(4a + 2b + c) - (4a - 2b + c) = -3 - (-7)

4a - 4a + 2b + 2b + c - c = -3 + 7

4b = 4

b = 1

Hence, let's now update our previous equations:

a + 1 + c = 2         =>         a + c = 1

4a - 2(1) + c = -7         =>         4a + c = -5

4a + 2(1) + c = -3         =>         4a + c = -5

This can be further whittled down into two equations:

a + c = 1

4a + c = -5

Hence, we can now subtract the first equation from the second to get:

(4a + c) - (a + c) = -5 - 1

4a - a + c - c = -6

3a = -6

a = -2

Therefore, c = 3 (a + c = 1, -2 + c = 1, c = 1 + 2, c = 3).

And the function is -2x^2 + x + 3.

Hope this helped!

4 0
3 years ago
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