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geniusboy [140]
2 years ago
15

Decide if each value is a solution of the inequality 2y<_8

Mathematics
1 answer:
Mice21 [21]2 years ago
8 0

Answer:

Only 4 is the right answer. The rest all are false.

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A bag contains even and odd numbered balls in the ratio of 3:7, respectively. For each of the following, what is the probability
Gre4nikov [31]

Answer:

a) 0.425

b) 0.65

c) 0.575

Step-by-step explanation:

The ratio of even balls to odd balls is 3:7.  That means if there are 3 even balls, then there are 7 odd balls.  That makes a total of 10 balls, of which 30% are even and 70% are odd.

a) There are 240 balls, so originally, 72 are even and 168 are odd.  30 of the odd balls are renumbered by multiply by 4.  An odd number times an even number is an even number, so 30 of the odd balls become even balls.  So there are now 102 even balls and 138 odd balls.  Therefore:

P(even) = 102 / 240

P(even) = 0.425

b) Originally, 70% of the balls are odd.  Half of those are renumbered by multiplying by 6, so they become even numbers.

P(odd) = 0.5 (70%) = 35%

P(even) = 30% + 35% = 65%

A third of the even balls are renumbered by multiplying by 5, so they remain even numbers.

Therefore, P(even) = 0.65.

c) Originally, 30% of the balls are even.  Half of those are renumbered by adding 3.  An even number plus an odd number is an odd number, so:

P(even) = 0.5 (30%) = 15%

P(odd) = 70% + 15% = 85%

Next, half the odd balls are renumbered by adding 5.  An odd number plus an odd number is an even number, so:

P(odd) = 0.5 (85%) = 42.5%

P(even) = 15% + 42.5% = 57.5%

Therefore, P(even) = 0.575.

8 0
3 years ago
If point A is between B and C then BA + AC = BC. always sometimes never
koban [17]
Always

Anytime point A is on line BC, AB+BC=BC
3 0
3 years ago
Read 2 more answers
Suppose you are saving money for a new cell phone. At week 0 you have $20 and at week 10 you have $100. If y represents the amou
grandymaker [24]
If we plot the given values in the Cartesian plane, the points to which the line would pass are (0, 20) and (10, 100). Thus, the slope m is,
                        m = (y2 - y1) / (x2 - x1)
Substituting,
                         m = (100 - 20) / (10 - 0) = 8
Thus, I saved 8 pesos per week. The answer to the question is letter C. 
6 0
3 years ago
Read 2 more answers
Please Help!!!
Marianna [84]
So, 10 x 10 is 100, x 8 is 800, your answer is D.

Formula for a cylinder = pi x r^2 x h
8 0
3 years ago
Solve the inequality 2x – 5 &gt; 7
ziro4ka [17]
<span>2x – 5 > 7 
Add 5 to both sides
2x > 12
Divide 2 on both sides
Final Answer: x > 6</span>
7 0
2 years ago
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