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Nata [24]
3 years ago
6

Solve the equation using square roots 3x^2-48=0

Mathematics
1 answer:
kari74 [83]3 years ago
5 0
<span>Simplifying 3X2 + -48 = 0
</span><span>Reorder the terms: -48 + 3X2 = 0
</span><span>Solving -48 + 3X2 = 0
</span>Solving for variable 'X'.
Move all terms containing X to the left, all other terms to the right.
<span>Combine like terms: -48 + 48 = 0 0 + 3X2 = 0 + 48 3X2 = 0 + 48 </span><span>Combine like terms: 0 + 48 = 48 3X2 = 48
</span><span>Divide each side by '3'. X2 = 16
</span><span>Simplifying X2 = 16
</span><span>Take the square root of each side: X = {-4, 4}</span>
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<u> </u><u>0.1071428571428571</u><u> is the </u><u>probability</u><u> that the total value is exactly 35 cents.</u>

<u />

What is probability ?

  • Probability is a measure of the likelihood of an event to occur. Many events cannot be predicted with total certainty.
  • We can predict only the chance of an event to occur i.e. how likely they are to happen, using it.

The only way you can get 35 cents is with 1 quarter and 2 nickels     (talk about funny money)

There are 3 ways to pick up a quarter  3C1

and there are 3 ways you can pick up 2 nickels   3C2

So there are  3*3=9 ways to choose 1 quarters and 2 nickels.   That is 9 favourable outcomes :)

Now, there are  9C3=84  ways to choose 3 coins from 9  SO

The probability of picking up 35c is    

                   \frac{9}{84} = \frac{3}{28}  = 0.1071428571428571

Learn more about probability

brainly.com/question/1327345

#SPJ4

<u>The complete question is -</u>

Steve has three quarters, three nickels and three pennies. If Steve selects three coins at random and without replacement, what is the probability that the total value is exactly 35 cents?

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Answer:

128/10000000 Mark Brainliest Please

Step-by-step explanation:

What is 0.0000128 as a fraction?

To write 0.0000128 as a fraction you have to write 0.0000128 as numerator and put 1 as the denominator. Now you multiply numerator and denominator by 10 as long as you get in numerator the whole number.

0.0000128 = 0.0000128/1 = 0.000128/10 = 0.00128/100 = 0.0128/1000 = 0.128/10000 = 1.28/100000 = 12.8/1000000 = 128/10000000

And finally we have:

0.0000128 as a fraction equals 128/10000000

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