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3 years ago

Verify if this is an identity cot(-x) tanx=-1

1 answer:

7 0

<span>hello :
</span>cot(-x) tan(x)=-1......(*)
* cot(x) = 1/tan(x)
cot(-x) = -cot(x)= -(1/tan(x))

cot(-x) tan(x) = -(1/tan(x))×tan(x)=-1

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In a basketball game, Jacob gets 4/9 of the rebounds and Adam gets 3/8 of the rebounds for their team. What fraction of the rebo

faust18 [17]

Answer:

The fraction of the rebounds the rest of the team get was 13/72 (13 out of the 72 total)

Step-by-step explanation:

Jacob gets 4/9

Adam gets 3/8

Since the given fraction provided doesn't have common denominator we would need to do thos first...

4/9 x 8/8 = 32/72

3/8 x 9/9 = 27/72

combining Adam and Jacob rebounds...

32/72 + 27/72 = 59/72

so the remaining, uncounted rebounds are...

72 - 59 = 13

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2 years ago

Sarah bought a TV at a 15% discount. Later she found that there should have been a 20% discount, so the store gave her $17 back.

ira [324]

Answer:

Step-by-step explanation:

The store gave her back the difference (20%-15%= 5%)

5%= the $17 returned

100/5= 20

20*17= $340 which was the original price of the TV before discounts

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2 years ago

Read 2 more answers

F(x)=3x-6<br> how do I figure this out

vitfil [10]

F(x) = 3x-6
add 6 to each side
6=3x
dived each side by 3
2=x

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4 years ago

Read 2 more answers

On a road map the distance from new york city to albany is 3 inches. The map scale is 1 in . :50 mil. How may miles is the actua

zhuklara [117]

150 miles. 3 times 50

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3 years ago

The security system in a house has two units that set off an alarm when motion is detected. Neither one is entirely reliable, bu

Mariulka [41]

Answer:

Probability that detector B goes off is '0.615'

Step-by-step explanation:

Given that:

1) Probability that detector A goes off and detector B does not go off is 0.25.

2)Probability that detector A does not go off is 0.35.

3)Probability that detector A goes off is (1-0.35)=0.65

Assuming that

Probability that detector B goes off is 'p' Hence the probability that detector B does not goes off is (1-p)

Thus the probability that detector A goes off and detector B does not go off is product of the individual probabilities

$P(E)=0.65\times (1-p)\\\\0.65\times (1-p)=0.25\\\\0.65-0.65p=0.25\\\\0.65-0.25=0.65p\\\\\therefore p=\frac{0.40}{0.65}=0.615$

Probability that detector B goes off is '0.615'

5 0

3 years ago