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cricket20 [7]
3 years ago
10

Please help me with this question. I will also give brainliest!

Mathematics
1 answer:
Alekssandra [29.7K]3 years ago
3 0
What question? I don’t see no question
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A lot of 200 chips contain 5 that are defective. 8 are selected random with out replacement.
vaieri [72.5K]

<u>Answer:</u>

1 , \frac{1}{66}  (Answer)

<u>Step-by-step explanation:</u>

Since, 8 chips are selected at random and 5 are there defectives in the lot, So, at least (8 - 5) = 3 chosen chips will be non - defective.

So, P ( At least two of selected part is non defective ) = 1 .

P(first and second samples are defective)

= \frac{5 \times 4}{200 \times 199}

P ( first, second and third samples are defective)

= \frac{5 \times 4 \times 3}{200 \times 199 \times 198}

So,

\frac{{\textrm{Third sample is defective | first and second samples are defectives}}}

=\frac{{\textrm{  P ( first, second and third samples are defective)}}}{{\textrm{  P(first and second samples are defective) }}}

= \frac{3}{198}

= \frac{1}{66}  (Answer)                                                          

7 0
4 years ago
In △JKL, solve for x. <br><br> (A)74.89<br> (B)30.29<br> (C)38.16<br> (D)66.73
Stels [109]

ANSWER

(C)38.16

EXPLANATION

The acute angle given in the right triangle is 27°.

The side length adjacent to the 27° angle is 34 units.

The side length we want to find is x units, which is the hypotenuse of the right triangle.

We use the cosine ratio to obtain:

\cos(27 \degree)  =  \frac{adjacent}{hypotenuse}

\cos(27 \degree)  =  \frac{34}{x}

Solve for x,

x  =  \frac{34}{\cos(27 \degree)}

x = 38.16

to the nearest hundredth.

4 0
4 years ago
Read 2 more answers
Find the inverse of the given function
Svetradugi [14.3K]

Answer:

f^-1(x) = 4x^2 -3 . . . . x ≤ 0

Step-by-step explanation:

Interchange x and y, then solve for y.

x = -1/2√(y+3)

-2x = √(y +3)

4x^2 = y +3

4x^2 -3 = y

Note that the range of the function f(x) is f(x) ≤ 0, so this will be the domain of the inverse function. Then the inverse function is ...

f^-1(x) = 4x^2 -3 . . . . for x ≤ 0

___

The attached graph shows this inverse function is a reflection of the function across the line y=x, as it should be.

3 0
3 years ago
The nth term of a sequence is 20-n^2<br> find the third term of the sequence
Olegator [25]

FOLLOW ME FOR CLEARING YOUR NEXT DOUBT

8 0
3 years ago
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Pls Help!!! Worth 99 Pts!!
Alenkasestr [34]
First, for end behavior, the highest power of x is x^3 and it is positive. So towards infinity, the graph will be positive, and towards negative infinity the graph will be negative (because this is a cubic graph)

To find the zeros, you set the equation equal to 0 and solve for x
x^3+2x^2-8x=0
x(x^2+2x-8)=0
x(x+4)(x-2)=0
x=0   x=-4   x=2

So the zeros are at 0, -4, and 2. Therefore, you can plot the points (0,0), (-4,0) and (2,0)

And we can plug values into the original that are between each of the zeros to see which intervals are positive or negative.
Plugging in a -5 gets us -35
-1 gets us 9
1 gets us -5 
3 gets us 21

So now you know end behavior, zeroes, and signs of intervals

Hope this helps<span />
6 0
3 years ago
Read 2 more answers
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