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Blizzard [7]
3 years ago
6

F(x) = 3x^2 - 4x Find f(2).

Mathematics
1 answer:
3241004551 [841]3 years ago
3 0

Answer:

f(2)= 3(2)^2 - 4(2)

3(4) - 8

12 - 8 = 4

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In a manufacturing plant that produces new computers, a 0.15 probability exists that a computer will be defective. if five compu
Sindrei [870]

The probability that all of them will be defective is 0.0000759375

<em><u>Explanation</u></em>

The general <u>Binomial Probability</u> formula is....

P= ^nC_{r}*p^r*(1-p)^n^-^r, where p is the probability of success, n is the total number of trials and r is the desired numbers of trials.

Given, the probability that a computer will be defective is 0.15 , so p = 0.15

Five computers are manufactured and we need to find the probability that all of them will be defective. That means, n = 5 and r = 5

Now according to the above formula....

P= ^5C_{5}*(0.15)^5*(1-0.15)^5^-^5 \\ \\ P= 1*(0.15)^5* (0.85)^0\\ \\ P=(0.15)^5 =0.0000759375

So, the probability that all of them will be defective is 0.0000759375

7 0
4 years ago
5) <br> Solve.<br> x - 32 = 73<br> A) x = 41 <br> B) x = 105 <br> C) x = 2336 <br> D) x = 2 9/32
Mice21 [21]

Answer:

b

Step-by-step explanation:

105 - 32 = 73

6 0
3 years ago
Read 2 more answers
0.75 = 0.750<br> are they equal
Sliva [168]
Yes they are the same. The number on the right just has an extra zero. You can add an infinite amount of zeros to the end of a number without changing it's value.
5 0
3 years ago
Read 2 more answers
PLEASE HELP ASAP 25 PTS
olya-2409 [2.1K]

Hello from MrBillDoesMath!

Answer:

Choice B     (  (x+6)/5) )



Discussion:

y =  f(x) =  5x - 6

To solve for the inverse of f, replace "y" by "x" and "x" by "y" in the original equation. That is, solve for "y" in

x = 5y -6    =>                  add 6 to both sides

x + 6 =  5y  =>                 divide both sides by 5

y =  (x+6)/5

"y" above is the inverse, which is Choice B



Thank you,

MrB

4 0
3 years ago
A suspension bridge has two main towers of equal height. A visitor on a tour ship
Scilla [17]

Answer:

The Height of the tower is 188.67 ft

Step-by-step explanation:

Given as :

The angle of elevation to tower = 15°

The distance travel closer to tower the elevation changes to 42° = 497 ft

Now, Let the of height of tower = h  ft

The distance between 42°  and  foot of tower = x  ft

So, The distance between 15° and  foot of tower =  ( x + 497 )  ft

So, From figure :

<u>In Δ ABC </u>

Tan 42° = \frac{perpendicular}{base}

Or , Tan 42° = \frac{AB}{BC}

Or,  0.900 = \frac{h}{x}

∴ h = 0.900 x

Again :

<u>In Δ ABD </u>

Tan 15° = \frac{perpendicular}{base}

Or , Tan 15° = \frac{AB}{BD}

Or,  0.267 = \frac{h}{( x + 497 )}

Or,  h = ( x + 497 ) × 0.267

So, from above two eq  :

     0.900 x =  ( x + 497 ) × 0.267  

Or, 0.900 x - 0.267 x =  497  × 0.267  

So, 0.633 x = 132.699

∴               x = \frac{132.699}{0.633}

Or,            x = 209.63  ft

So, The height of tower = h = 0.900 × 209.63

Or,                                      h = 188.67 ft

Hence The Height of the tower is 188.67 ft    Answer

3 0
3 years ago
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