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BaLLatris [955]
2 years ago
7

66 athletes are running a race. A gold medal is to be given to the winner, a silver medal is to be

Mathematics
1 answer:
Dmitrij [34]2 years ago
8 0

Answer:

274560

Step-by-step explanation:

We can "choose" one of the 66 athletes for the gold medal. That athlete can't win any other medals, so there are 65 athletes left.

We can then "choose" one of the 65 athletes left for the silver medal. That athlete can't win any other medals, so there are 64 athletes left.

We can then "choose" one of the 64 athletes left for the bronze medal.

That leaves us with 66 possible choices * 65 possible choices * 64 possible choices=274560 possible choices

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Which of the following equations have complex roots?
valkas [14]

Answer:

B

Step-by-step explanation:

A:

Completing the square:  (x+ 7/2)^2 = -2 + 49/4 = 41/4, in the next step you'll be square rooting a positive number so it'll have real roots.

B:

Completing the square:  (x+3/2)^2 = -9 + 9/4 = -27/4, you'll next be square rooting a negative number, so it'll have complex roots

C:

Completing the square:  (x-5/2)^2 = -1 + 25/4 = 21/4, next you'll square root a positive number, so real roots

D:

Completing the square: (x+7/2)^2 = 2 + 49/4 = 57/4, square root a positive number, so real roots.

8 0
3 years ago
What's the ratio of 60 and 96
ella [17]
60:96
\frac{60}{12}:\frac{96}{12}
5:8
3 0
3 years ago
**How do you factor -4x²+14x-6?
MAXImum [283]


2 goes into all the terms so;

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2(-2x - 1)(x + 3)

5 0
2 years ago
Ans the question...... very urgent ​
MArishka [77]

Answer:

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8 0
3 years ago
Tommy has 5 jars of marble. Each Jar is filled 2/3 with marbles. How many full Jars does tommy have? Make a model and shade in t
ivann1987 [24]

5 / ( 2 / 3 ) = 7.5

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6 0
2 years ago
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