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Assoli18 [71]
3 years ago
15

What is the probability of all cogs being defective

Mathematics
1 answer:
Sonbull [250]3 years ago
5 0

Prob (first defective) = 4 / 20 = 1/5

Prob(2nd defective) = 3/19

Prob (3rd defective) = 2/18 = 1/9

Pron 4th defective) = 1/ 17

Prob ( all 4 defective) = 1/5 * 3/19 * 1/9 * 1/17 = 1 / 4845 answer

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0.9d-2.1f<br> Helpp!!❗‼️
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Step-by-step explanation:

0.9(17) -2.7(3) =

15.3-8.1

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2 years ago
Lainey bought a set of 20 makers for $6 what is the cost of 1 marker? <br>​
loris [4]

Answer:

0.30

Step-by-step explanation:

$6 Total

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6 0
3 years ago
What is 94237108 in standard form
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It would be:
9.4237108*10^7
7 0
2 years ago
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Select the property of equality used to arrive at the conclusion. If x = 3, then x 2 = 3x
VARVARA [1.3K]
I think it would be the Multiplication property of equality
4 0
3 years ago
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What is the equation of a line that is parallel to the line 2x + 5y = 10 and passes through the point (-5, 1)? Check all
Lilit [14]

Answer:

B, E

Step-by-step explanation:

The equation of that line in slope intercept form is y = -2/5x + 2

The slope of a line parallel to that line will be the same as its slope, so -2/5.

To find the y-intercept of a line that passes through the point (-5, 1) with that slope, you will have to plug in the x and y values of that point into what you know of the equation of the line.

y = -2/5x + b

1 = -2/5(-5) + b

1 = 2 + b

-1 = b

From this, you can construct an equation.

y = -2/5x - 1

However, this is not an answer choice.  

It cannot be A because this line does not have a slope of -1.

2x + 5y = 15

5y = -2x - 5

y = -2/5x - 1

It can be B because this line is the same as the equation we came up with.

It cannot be C because this line does not have a slope of -1 or a y-intercept of -3.

2x + 5y = -15

5y = -2x - 15

y = -2/5x - 3

It cannot be D because this line does not have a y-intercept of -3.

y - 1 = -2/5(x + 5)

y - 1 = -2/5x - 2

y = -2/5x - 1

It can be E because this equation matches the one we came up with.

5 0
2 years ago
Read 2 more answers
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