P(picking one defective) = 3/10
P(picking a 2nd defective) = 2/9

P(1 and 2 defective) = 3/10 x 2/9 = 6/90 = 0.066

Second method using combination:
³C₂ / ¹⁰C₂ = 1/15 = 0.066

4 0

4 years ago

The i-phone 7 Plus 32G costs $769. Amazon has a sale for 15% off. What's the sale price?

kiruha [24]

Answer:

653.65

Step-by-step explanation:

? 15

769 100 15/100 is 15%.

769 * 15 = 11,535 11,535/100 = 115.35

769

- 115.35

653.65

4 0

3 years ago

What is the result if you divide -12x^8y^8 by 3x^4y^2

Alexxandr [17]

Answer:

Step-by-step explanation:

$\dfrac{a^{m}}{a^{n}}=a^{m-n} \ ; m > n$

$\dfrac{-12x^{8}y^{8}}{3x^{4}y^{2}}=-4x^{8-4}y^{8-2}\\\\\\ = -4x^{4}y^{6}$

7 0

3 years ago

Complete the point-slope equation of the line through

Grace [21]

<h2>Answer:</h2>

First: info on point-slope form.

Formula: <em>y - y₁ = m(x - x₁)</em>

We need to find the slope of the line first.

$m = \frac{2 + 1}{5 - 1} = \frac{3}{4}$

Slope: $\frac{3}{4}$

Now we can complete the point-slope equation of the line.

$y - (-1) = \frac{3}{4}(x - 1)\\\\y + 1 = \frac{3}{4}(x - 1)$

*These equations are equivalent.

8 0

3 years ago