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blagie [28]
3 years ago
8

If you flip three fair coins, what is the probability that the first two flips will both be heads, and the third flip will be ei

ther heads or tails?
Mathematics
2 answers:
horsena [70]3 years ago
8 0

Answer:

1/4

Step-by-step explanation:

Degger [83]3 years ago
6 0

Answer:

1/4

Step-by-step explanation:

This is correct on khan academy!

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What do I write help!​
ExtremeBDS [4]

Answer:

A

Step-by-step explanation:

6 0
3 years ago
What is a solution to the system? y = x^2 + 2x - 15 y – 4x = -12
astra-53 [7]

9514 1404 393

Answer:

  (x, y) = (-1, -16) or (3, 0)

Step-by-step explanation:

Perhaps you want to solve the system of equations ...

  • y = x^2 +2x -15
  • y -4x = -12

Substituting the first expression for y into the second equation gives ...

  x^2 +2x -15 -4x = -12

  x^2 -2x -3 = 0 . . . . . . . . add 12

  (x -3)(x +1) = 0 . . . . . . .  factor

Solutions are the values of x that make the factors zero: x = 3, x = -1.

The corresponding values of y are ...

  y = -12 +4x

  y = -12 +4{-1, 3} = -12 +{-4, 12} = {-16, 0}

The solutions to the system are ...

  (x, y) = (-1, -16) or (3, 0)

5 0
2 years ago
If you solve using the equation for the constant of proportionality, y/x = k with k = 4/5 and y = 2/3, what is the value of x?
ruslelena [56]

Answer:

x=5/6

Step-by-step explanation:

k=4/5

3 and 5 can go into 15

10/15 and 12/15

10/15 divided by x =12/15

x=5/6

6 0
3 years ago
Read 2 more answers
.help me solve please and thank you✨
svetlana [45]
The first one, SAS Postulate
8 0
3 years ago
5. What’s the answer to this question ASAP
tatiyna

Answer:

D is the correct answer

(hope this helps)

8 0
3 years ago
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