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zhenek [66]
3 years ago
12

If f(x) = -2x – 3 and g(x) = x2 – 1 find f(-3) + g(3).

Mathematics
1 answer:
xenn [34]3 years ago
3 0

Answer:

Step-by-step explanation:

g ( f ( x ) ) = ( x+ 3) ^2

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Answer:

Find the inverse of g(x)=1/x-1+2 :

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If x = 4 and y = 7 , evaluate the following expression: 100 − 3 ( 3 y − 4 x
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Answer:

100-3*3*7-4*4

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If sin phi sin theta = 0.2 and sin phi cos theta = -0.3 and sin phi > 0 what is theta ? Repeat for sin phi < 0.
Rina8888 [55]

Answer:

θ = -33.69°

Step-by-step explanation:

For Φ>0 and Φ<0  (in general Φ≠nπ  where n is an integer), sin(Φ) ≠ 0

Dividing both equations:

\frac{sin(\phi) sin(\theta)}{sin(\phi)cos(\theta)} = tan(\theta) = 0.2/(-0.3)=-2/3\\

Therefore:

arctan(θ) = -2/3

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The answer does not depend on the sign of Φ, in fact we just need that the sine does not become zero, which occurs when Φ is equal to an integer times π (radians) or 180 (degrees)

Have a nice day!

3 0
3 years ago
A classroom has a presentation system that consists of four components, each of which must activate if the system is to work ade
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Answer:

0.87

Step-by-step explanation:

According to the scenario, computation of given data are as follows,

As, each must be activated, this shows that components are in series.

So, we can calculate reliability of system by using following formula,

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So, overall system reliability  = 0.97 × 0.99 × 0.97 × 0.93

overall system reliability = 0.866 or 0.87

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3 years ago
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