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3 years ago

8

A box contains 10 transistors, 3 of which are defective. If 3 are selected at random, find the probability that a. All are def

ective. b. None are defective.

2 answers:

bixtya [17]3 years ago

6 0

3/10(2/9)(1/8)

3/10(3/9)(3/8)

kherson [118]3 years ago

5 0

A) 3/10 x 2/9 x 1/8= 1/120

b) 1-1/120=119/120

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Please Help me answer all 4 questions with a full explanation so I can solve the rest on my own.

Nata [24]

$\\ \rm\Rrightarrow (2x^2)^3.2yx^0=8x^6.2y=16x^6y$

$\\ \rm\Rrightarrow (2x^4y^3)^3.2x^4y^4=8x^{12}y^6.2x^4y^4=16x^{16}y^{10}$

$\\ \rm\Rrightarrow (m^3n^0(2m^3n^2)^4)^2=(m^316m^{12}n^8)^2=(16m^{15}n^8)^2=256m^{30}n^{16}$

$\\ \rm\Rrightarrow (2xy^3)^2.2x^2y^0=4x^2y^6.2x^2=8x^4y^6$

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2 years ago

??????????????????????

natita [175]

Answer:

Figure out what x is for both equations, then you can tell if the equations are the same

Step-by-step explanation:

1. 4x+1=9

x = 2

4 x 2= 8

2x+1=5

x = 2

2 x 2 = 4

4 does not = 9 so no.

4 0

3 years ago

Identify the equation of a line in slope-intercept form that is perpendicular to y = -1/3 x + 2 and passes through (2, 1)

Airida [17]

Answer:

Step-by-step explanation:

The slope of a line perpendicular to another line is the opposite reciprocal of the slope of the other line, meaning if the slope of the other line is $-\frac{1}{3}$ , then the slope of the line perpendicular is $3$ .

Knowing this, we can start to construct the equation for the line:

$y = mx + b$

$y = 3x + b$

To solve for $b$ , we plug in the coordinates of the point that we know the line runs through, $(2, 1)$ :

$y = 3x + b$

$1 = 3(2) + b$

$1 = 6 + b$

$b = -5$

Therefore, the slope of the line that is perpendicular ot the line provided in the equation is the following:

$y = 3x - 5$

5 0

3 years ago

Simplify each expression:<br> -(14 + x)

bearhunter [10]

Answer:

-14-x

Step-by-step explanation:

Distribute the negative.

7 0

3 years ago

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Need to figure out what number is rational. Thanks in advance.

GarryVolchara [31]

I think the answer you have there is correct

8 0

3 years ago

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