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Vladimir79 [104]
3 years ago
15

There are 25 buttons on a table 10 are blue 15 are red without lokking pick up one button what is the probability that it is red

Mathematics
1 answer:
Paul [167]3 years ago
3 0
Out of the 25 buttons, 15 are red. So we set up the fraction \frac{15}{25}.

(15/25)(4) = 60/100 or 60%

So you have a 60% chance of picking up a red button if 15 out of the 25 buttons are red. 
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Answer:

1 false

2 true

3 true

4 false

5 true

Step-by-step explanation:

f(a) = (2a - 7 + a^2) and g(a) = (5 – a).

1 false f(a) is a second degree polynomial and g(a) is a first degree polynomial

When added together, they will be a second degree polynomial

2. true  When we add and subtract polynomials, we still get a polynomial, so it is closed under addition and subtraction

3.  true  f(a) + g(a) = (2a - 7 + a^2) + (5 – a)

Combining like terms = a^2 +a -2

4.  false   f(a) - g(a) = (2a - 7 + a^2) - (5 – a)

Distributing the minus sign (2a - 7 + a^2) - 5 + a

Combining like terms  a^2 +3a -12

5.  true  f(a)* g(a)  = (2a - 7 + a^2)  (5 – a).

Distribute

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Combining like term

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