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abruzzese [7]
4 years ago
13

a family has five children The probability of having a gil is 1/2 What is the probability of having exactly 2 girls out of five

children
Mathematics
1 answer:
My name is Ann [436]4 years ago
4 0
P(no girls in five births) = p(five boys) = (1/2)^5 = 1/32 = 0.0313
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2 years ago
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3 years ago
Multipy the expreshions (2h+2.7) (2h-27)​
Musya8 [376]

Answer:

4h^2-48.6h-72.9

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5 0
3 years ago
Need help, it’s an assignment ‍♀️
iris [78.8K]

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7 0
3 years ago
What is are the solutions to | x+4 |= 3x-5?
bonufazy [111]

Answer:

x = \frac{9}{2}

Step-by-step explanation:

The absolute value always returns a positive value but the expression inside can be positive or negative, that is

x + 4 = 3x - 5 ( subtract 3x from both sides )

- 2x + 4 = - 5 (subtract 4 from both sides )

- 2x = - 9 ( divide both sides by - 2 )

x = \frac{9}{2}

OR

-(x + 4) = 3x - 5

- x - 4 = 3x - 5 ( subtract 3x from both sides )

- 4x - 4 = - 5 ( add 4 to both sides )

- 4x = - 1 ( divide both sides by - 4 )

x = \frac{1}{4}

As a check

Substitute these values into the equation and if both sides are equal then they are the solutions

| \frac{9}{2} + 4 | = | \frac{17}{2} | = \frac{17}{2}

right side = \frac{27}{2} - 5 = \frac{17}{2}

left side = right side , thus x = \frac{9}{2} is a solution

check second solution

| \frac{1}{4} + 4 | = |  \frac{17}{4} | = \frac{17}{4}

right side =   \frac{3}{4} - 5 = -   \frac{17}{4}

right side ≠ left sides, hence not a solution

7 0
4 years ago
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