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Mariana [72]
2 years ago
13

If a fair coin is tossed 9 times, what is the probability, to the nearest thousandth, of

Mathematics
1 answer:
kozerog [31]2 years ago
6 0

Answer:

=0.444

Step-by-step explanation:

probability= <u>expected outcome</u>  =  <u> 4 </u>

                        total outcome            9

<u>4</u> into decimal  = 0.444( to the nearest thousandths- 3dp)

9

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5 0
3 years ago
Simplify the expression 3x²-5x-4+xy-(2xy+2x²) then evaluate the result if x=-1 and y=6
lidiya [134]
3x²-5x-4+xy-(2xy+2x²) Simplified is x²-5x-4-xy
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3 years ago
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3 years ago
Consider the quadratic equation x2 − 6x = 16.
e-lub [12.9K]

Answer:

  1. C) (x − 3)2 = 25
  2. C) Factor out 4 from 4x2 + 40x.

Step-by-step explanation:

1. Adding the square of half the x-coefficient to both sides of the equation will "complete the square." That square is 9, so the result on the right is 16+9 = 25. Only selection C matches.

___

2. To complete the square, you want to be able to put the quadratic into the form a(x -h)^2 = -k. For the purpose, it is most convenient to first factor "a" from the given quadratic. Then you can determine "-h" to be half the x-coefficient inside the parentheses.

Here, that looks like ...

  4(x² +10x) = 80 . . . . . . . . . . step 1: factor out 4

  4(x² +10x +25) = 180 . . . . . add 25 inside parentheses and the same number (4·25) on the right side of the equation

  4(x +5)² = 180 . . . . . . . . . . . written as a square

8 0
3 years ago
What is the area of a rectangle if it is 1/2 of a meter long and 3/8 of a meter wide?
Sonbull [250]

Answer:

Area equals to 3/16

Step-by-step explanation:

You can compute this with the easiest way,that is with formula

Area=LENGTH×WIDTH

So,1/2 × 3/8=3/16

5 0
3 years ago
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