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Setler79 [48]
2 years ago
11

Need help checking my answers thanks!!

Mathematics
2 answers:
vfiekz [6]2 years ago
8 0
Yes they are correct :)
Hitman42 [59]2 years ago
3 0

Answer:

They are correct good job!

Step-by-step explanation:

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Two assembly lines I and II have the same rate of defectives in their production of voltage regulators. Six regulators are sampl
Kamila [148]

Answer:

0.4546

Step-by-step explanation:

nCr = n!/(n-r)!r!

Number of ways of selecting the four defective voltage regulators from 12 =  12C4 = 12!/(12-4)!4! = 12!/8!4! = (12 *11*10*9)/(4*3*2*1)

12C4 =  495 ways

Number of ways of selecting 2 defectives from line 1 = 6C2 * 6C2

6C2 = 6!/(6-2)!2! = 6!/4!2! = (6*5)/(2*1) = 15

6C2 * 6C2 = 15*15 = 225 ways

Probability = Number of possible outcomes/ Number of total outcomes

Probability that exactly 2 of the defective regulators came from line 1 = 225/40.95 = 0.4546

4 0
3 years ago
I’m confused on what’s going on here, so if someone could explain it I would be super grateful.
pshichka [43]
<h2>Range of x </h2><h3>-\frac{1}{5} and x>6</h3><h3>Step-by-step explanation:</h3>

Given AB = 4x + 5, BC = 3x - 2 and AC 9x -5

The sum of the length of any two sides of a triangle is greater than the length of third side.

Case I

AB + BC > AC

⇔4x +5 +3x -2 > 9x -5

⇔7x + 3 >9x - 5

⇔ 7x -9x > -5 -3

⇔-2x > -8

⇔x <4

Case II

if AB+AC > BC

4x +5 +9x -5> 3x -2

⇔13x >3x -2

⇔ 13x -3x> -2

⇔10x > -2

⇔x >-\frac{1}{5}

Case III

AC+BC > AB

⇔9x - 5 +3x - 2 > 4x +5

⇔6x -7 > 4x +5

⇔6x -4x >5+7

⇔2x > 12

⇔x > 6

8 0
3 years ago
What's the solution to 3x – 6 &lt; 3x + 13? A. x &gt; 5 B. There are no solutions. C. There are infinitely many solutions. D. x
erma4kov [3.2K]

Answer:

C. There are infinitely many solutions.  

Step-by-step explanation:

3x – 6 < 3x + 13

Subtract 3x from each side

-6 < -13

This inequality is always true.

There are infinitely many solutions.

8 0
3 years ago
What is the value of x? <br> ANSWER ASAP!!!
svp [43]

Answer:

24 inches

Step-by-step explanation:

15 divided by 3 equals 5, so you need to do to the other side. Which would be  X divided by 3 equals 8. 24 divided by 3 equals 8

3 0
3 years ago
CONDITIONAL PROBABILITY URGENT?
kirill115 [55]

Senior = 5

Senior but Girls = 4

so P(Senior | Girl) = 4/5

Hope it helps.

6 0
3 years ago
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