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Oksanka [162]
4 years ago
7

For every 144 light bulbs produced, 6 are defective. Find the number of defective light bulbs that could be expected out of 720.

Mathematics
1 answer:
aleksklad [387]4 years ago
8 0
30 Lightbulbs
Hope this helps
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Can someone smart help me with this question plz:)
SOVA2 [1]

Answer:

K = 50

L = 90

KML = 40

LMN = 140

Step-by-step explanation:

The sum of the angles in a triangle will always be 180 degrees, and in the triangle pictured, we know the value of each angle. We can say that

5x + 4x + 9x = 180

18x = 180

x = 10

Now that we know the value of x, we can figure out the value of the angles.

K = 5x = 50

L = 9x = 90

KML = 4x = 40

A straight line is 180 degrees, so to find angle KMN, you have to subtract KML (4x) from 180

180 - 4x = 180 - 40 = 140

3 0
3 years ago
Sin2A+sin2B+sin2C÷4cosA/2.cosB/2.cosC/2​
Mrrafil [7]
The answer is c2 have a good day !!!! Bc you add all the numbers up and you will get it
3 0
2 years ago
I think I know this much so far for A (but I could be wrong):
Eduardwww [97]
Part A. You have the correct first and second derivative.

---------------------------------------------------------------------

Part B. You'll need to be more specific. What I would do is show how the quantity (-2x+1)^4 is always nonnegative. This is because x^4 = (x^2)^2 is always nonnegative. So (-2x+1)^4 >= 0. The coefficient -10a is either positive or negative depending on the value of 'a'. If a > 0, then -10a is negative. Making h ' (x) negative. So in this case, h(x) is monotonically decreasing always. On the flip side, if a < 0, then h ' (x) is monotonically increasing as h ' (x) is positive.

-------------------------------------------------------------

Part C. What this is saying is basically "if we change 'a' and/or 'b', then the extrema will NOT change". So is that the case? Let's find out

To find the relative extrema, aka local extrema, we plug in h ' (x) = 0
h  ' (x) = -10a(-2x+1)^4
0 = -10a(-2x+1)^4
so either
-10a = 0 or (-2x+1)^4 = 0
The first part is all we care about. Solving for 'a' gets us a = 0. 
But there's a problem. It's clearly stated that 'a' is nonzero. So in any other case, the value of 'a' doesn't lead to altering the path in terms of finding the extrema. We'll focus on solving (-2x+1)^4 = 0 for x. Also, the parameter b is nowhere to be found in h ' (x) so that's out as well. 
6 0
3 years ago
Which of the following could be the equation of a line parallel to the line y =-2/3x-1
kkurt [141]
It would be c, y = 2/3x + 6
5 0
3 years ago
Arsham is training for a race .after 15 minutes he has 22 laps left to run after 44 minutes he has 2 laps left what is the total
olga55 [171]
 Arsham ran 20 laps because 22- 2= 20.

3 0
4 years ago
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