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ioda
3 years ago
6

Box 1 contains 1400 bulbs of which 15% are defective. Box 2 contains 500 bulbs of which 9% are defective. Two bulbs are picked f

rom a randomly selected box with equal probability for both Box 1 and Box 2. (Both bulbs are from the same box.)
Mathematics
1 answer:
Vikki [24]3 years ago
7 0

Answer:

4444

Step-by-step explanation:

245890iuhg

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Tell me the answer of these question.
Nonamiya [84]
16. \ \ V= \pi r^2h \ \to \ r^2= \cfrac{V}{ \pi h}  \ \to \ \boxed{r= \sqrt{ \frac{V}{ \pi h} } } \\ \\ \\ 17.\ \ d= \frac{1}{2} at^2 \ \to \ 2d= at^2   \ \to \ t^2= \cfrac{2d}{a} \   \to \ \boxed{t= \sqrt{\frac{2d}{a}}} \\  \\   \\ 18. \ \ S=180(n-2) \ \to \  \cfrac{S}{180}=n-2 \ \to \ \boxed{n= \frac{S}{180}+2 }
6 0
3 years ago
The spending limit on John’s credit card is given by the function f(x)=15,000+1.5x , where x is his monthly income. f^-1x . The
Katena32 [7]
<span>1.
"The spending limit on John’s credit card is given by the function f(x)=15,000+1.5x"

means that if the monthly income of John is $ 5,000 ,he can spend at most 

f(5,000)=15,000+1.5*5,000=15,000+ 7,500=22, 500 (dollars)

Or for example

if Johns monthly income is $8,000, then he can spend at most

 </span>f(8,000)=15,000+1.5*8,000=15,000+ 12,000=27,000 (dollars)<span>


2.
Now, assume that the maximum amount that John can spend is y.

Then, y=15,000+1.5x

we can express x, the monthly income, in terms of y by isolating x:

</span>y=15,000+1.5x
<span>
1.5x = y-15,000


</span>x= \frac{y-15,000}{1.5}
<span>
thus, in functional notation, x, the monthly income, is a function , say g, of variable y, the max amount:

</span>x=g(y)=\frac{y-15,000}{1.5}

since we generally use the letter x for the variable of a function, we write g again as:

g(x)=\frac{x-15,000}{1.5}
<span>
for example :

</span>g(50,000)=\frac{50,000-15,000}{1.5}= \frac{35,000}{1.5}= 23,333
<span>
tells us that if the maximum amount that John can spend is 50,000 $, then his monthly income is 23,333 $.

3.

If John's limit is $60,000, his monthly income is 

</span>g(60,000)=\frac{60,000-15,000}{1.5}= \frac{45,000}{1.5}=30,000<span>
 dollars.


Answer: $ 30,000

Remark: g is called the inverse function of f, since it undoes what f does.

instead of g(x), we could use the notation </span>f ^{-1}(x)<span>



</span>
6 0
2 years ago
Please someone come thru for me idk how to get these answers
postnew [5]
I can barley see can you take another one please
5 0
3 years ago
Simplify the expression. ( 5 x 2 − 3 x ) − ( 5 x 2 − 3 x + 1 )
iren [92.7K]

Answer:

-1

Step-by-step explanation:

Following PEMDAS The answer equals to -1

<u>*plssss make me brainlist*</u>

6 0
3 years ago
Read 2 more answers
Mr. Kramer has 30 pencils for his class. There are 22 students in his class and he would like
saw5 [17]

Answer:

6

Step-by-step explanation:

Mr. Kramer has pencils for his class = 30

Students in his class = 22

Pencils he would like  to give each student = 2

How many more pencils does Mr. Kramer need to buy so that each student will receive 2 pencils = ?

Total pencils Mr. Kramer need to buy so that each student will receive 2 pencils = 22 × 2

            = 44

            = 44 - 30

            = 6

Mr. Kramer need to buy 6 more pencils  so that each student will receive 2 pencils

5 0
3 years ago
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