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pantera1 [17]
3 years ago
9

Let f (x)sinx cosx, then f'(x) =A. Cos2xB. sin2xC. tan 2xD. cos2x - sin2x​

Mathematics
1 answer:
Degger [83]3 years ago
8 0

Answer:

A. Cos2x

Step-by-step explanation:

f(x) = sin(x)cos(x) = (1/2) sin(2x)   using double angle formula.

f'(x) = ( (1/2)sin(2x) )' = 2(1/2)cos(2x) = cos(2x)

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Qual'è la radice quadrata di 36?
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Answer:

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3 years ago
In ΔIJK, the measure of ∠K=90°, KI = 5.3 feet, and JK = 2.1 feet. Find the measure of ∠I to the nearest tenth of a degree.
tatiyna

Answer:

Step-by-step explanation:

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7 0
3 years ago
10 - 5 / 10 ^ 2 + 0.4 (4+0.2)​
Alexus [3.1K]

PEMDAS

parenthesis, exponents, mult/division, add/subtract

parenthesis: 4+0.2= 4.2

exponents: 10^2= 10×10= 100

new equation: 10-5/100×0.4(4.2)

multiply/divide: 10-(1/20)×.4×4.2

10-(0.05)(0.4)(4.2)

10-0.002×4.2

add/subtract: 10-0.0084 = 9.9916

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3 0
4 years ago
An experiment consists of rolling a single die and selecting a card from a standard deck. Use this information to answer the fol
Alexus [3.1K]

Answer:

1/160

Step-by-step explanation:

Assuming that you want to roll a 5 and then select the ace of hearts that would make this a sequence of events. In order to find the probability of this happening, you would need to multiply the probability of each of these events happening separately with one another.

Since there are a total of 6 possible outcomes when rolling a die (1,2,3,4,5,6) which rolling a 5 is only one of the options. Meaning that the probability of rolling a 5 is 1/5.

In a deck of cards, there are a total of 32 cards in the deck and only 1 of those cards is an ace of hearts. Meaning that the probability of getting the ace of hearts is 1/32. Now we simply multiply these two probabilities together to get the probability of the sequence.

1/5 * 1/32 = 1/160

4 0
3 years ago
What is the radius of a circle with circumference 17mm? Round to nearest tenth. Use 3.14
WINSTONCH [101]
     C = 2πr
   17 = 2(3.14)(r)
   17 = 2(3.14r)
   17 = 6.28r
 6.28   6.28
2.71 ≈ r
5 0
4 years ago
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