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denpristay [2]
4 years ago
6

One person in a stadium filled with 100,000 people is chosen at random to win a free pair of airline tickets. what is the probab

ility that it will not be you?
Mathematics
1 answer:
Arada [10]4 years ago
3 0
Well...the probability that it will be u is 1/100,000...so the probability that it will not be u is : 999,999/100,000
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If 2a+ 2/a =4, what is the value of 2a^2− 2/a^2 ?
aliina [53]

Answer:

0

Step-by-step explanation:

2a+ 2/a =4

Multiply each side by a to clear the fraction

a( 2a+ 2/a) =4*a

Distribute

2a^2 +2 = 4a

Subtract 4a from each side

2a^2 -4a +2 = 4a-4a

2a^2 -4a +2 =0

Divide by 2

2/2 a^2 -4a/2 +2/2 =0/2

a^2 -2a +1=0

Factor

(a-1) (a-1) =0

Using the zero product property

a=1

2a^2 -2/a^2

2(1)^2 -2/1^2

2-2

0

5 0
3 years ago
How do you write the algebraic expression: x=-2.5 like i mean the answer
Ganezh [65]

Answer:

2.5 × t = 2.5 t

Step-by-step explanation:

5 0
3 years ago
Please help me on math homework! <br> File attached! :D
r-ruslan [8.4K]
Use pythagorena theorme

D=\sqrt{(x1-x2)^{2}+(y1-y2)^{2}}
NOTE: x1 and x2 means the first x and second x, not x^1 and x^2

points given are
(1,1)
(5,6)
x1=1
y1=1
x2=5
y2=6
D=\sqrt{(1-5)^{2}+(1-6)^{2}}
D=\sqrt{(-4)^{2}+(-5)^{2}}
D=\sqrt{16+25}
D=\sqrt{41}
6.403


answer is B
7 0
3 years ago
Read 2 more answers
100 BRAINLY POINTS!!!
laila [671]

Answer:

  • C. Her sister grew about 0.75 inch each month.

Step-by-step explanation:

Given function:

  • y = 0.75x + 15

The function is linear and it represents:

  • y - current heigt of baby
  • x - number of months passed
  • 0.75 - the slope is the monthly growth rate
  • 15 - the y-intercept, is the initial height of baby

According the above explanation the correct answer choice is C

4 0
3 years ago
Read 2 more answers
Write an equivalent equation that does not contain parentheses for 3(k-x) = -3x-9
amm1812
3(k-x)= -3x-9
3k - 3x = -3x - 9 ← equation without parentheses
3k - 3x + 3x = - 9
3k = -9
k = -9/3 
k = -3  ← simplest form
8 0
3 years ago
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