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3 years ago

There are 7 women and 9 men if 2 are promoted what is the probability they are both men

Mathematics

1 answer:

Artist 52 [7]3 years ago

5 0

Answer:

3/10

Step-by-step explanation:

Total number of employees = 7 + 9 = 16

Probability of a man being chosen first to be promoted = 9/16

Probability of the second choice is still a man for promotion = 8/15

Why 8/15?

The number of men left who are eligible for promotion after the 1st man was chosen for promotion is 9 - 1 = 8

The total number of people left after the 1st person is chosen for promotion that are eligible for promotion is 16 - 1 = 15

Hence Probability of choosing 2 men for promotion = 9/16 x 8/15 = 3/10

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Solve the system of equations using the substitution method.

Delicious77 [7]

Answer:

$x = 14$

$y = -3$

Step-by-step explanation:

Given

$2x + 8y =4$

$x = -3y + 5$

Required

Solve

Substitute $x = -3y + 5$ in $2x + 8y =4$

$2(-3y + 5) + 8y =4$

Open bracket

$-6y + 10 + 8y =4$

Collect like terms

$-6y + 8y =4-10$

$2y =-6$

Divide both sides by 2

$y = -3$

Substitute $y = -3$ in $x = -3y + 5$

$x = -3 * -3 + 5$

$x = 9+ 5$

$x = 14$

8 0

3 years ago

Start with the number n = 54527. Divide n by 5 and round the result up to an integer. Keep repeating the division and rounding s

Elza [17]

Without rounding, I make it six. You could do it this way
54527/5^6 comes to a little over 3. That should be close enough. I'm going to check this by doing the divisions. I could let the computer do it, but I'd like to see if there's a pattern. There isn't and the correct answer is

6 <<<< divisions.

5 0

3 years ago

What is the sales tax rate if a $7,190 purchase will have $568.01 of sales tax added to it?

inna [77]

Answer:

7.9%

Step-by-step explanation:

568.01/7190=0.079=7.9%

5 0

3 years ago

EASY 50 POINTS <br><br><br>Which statement is not a step used when constructing an inscribed square?

Damm [24]