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Mama L [17]
3 years ago
13

Differentiate f() = ( − cos()) sin()

Mathematics
1 answer:
victus00 [196]3 years ago
7 0

Answer:

1

Step-by-step explanation:

f'(x) = -d(cos(x))/dx*sin(x) + d(sin(x))/dx * cos(x)

f'(x) = sin(x) * sin(x) + cos(x)*cos(x)

f'(x) = 1

I haven't got theta to comply with your request. The best I can do us use the word theta. x has exactly the same meaning, and the answer would be 1.

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What is (9x+5) - (4x+3)
harina [27]
I believe it's 7x because 9x+5 is 14x and 4x+3 is 7x and if u subtract it should be I'd I beg your pardon if it's wrong
6 0
3 years ago
A plane traveled 1794 miles to Bangkok and back. The trip there was with the wind. It took 13 hours. The trip back was into the
Burka [1]

Answer:

The speed of wind is 30 miles/hour

Speed of plane in still air is 108 miles /hour

Step-by-step explanation:

Distance traveled by plane to Bangkok =  1794 miles

The trip there was with the wind. Time taken = 13 hours.

The trip back was into the wind. The trip back took 26 hours.

Let s = plane speed in still air

let w = speed of the wind

(s+w) = speed of plane with wind

(s-w) = speed of plane against wind

Distance = Speed * Time

When the trip was with the wind .

⇒1794 =(s+w)\times13

⇒\frac{1794}{13}=s+w

⇒138=s+w ---1

When The trip back was into the wind.

⇒1794 =(s-w)\times23  

⇒\frac{1794}{23}=s-w

⇒78=s-w ---2

Add 1 and 2

⇒s+w+s-w =138+78

⇒2s =216

⇒s=\frac{216}{2}

⇒s=108

To find w substitute the value of s in 1

⇒138=108+w

⇒138-108=w

⇒30=w

Thus the speed of wind is 30 miles/hour

Speed of plane in still air is 108 miles /hour

4 0
3 years ago
the height in feet of an object projected upward is given by the polynomial -16t^2+60t+90 where t represents time, in seconds. F
Karolina [17]

<u>Given</u>:

The height of an object project upward is given by the polynomial

h=-16t^2+60t+90

where t represents the time, in seconds.

We need to determine the height after t = 2.5 seconds.

<u>Height of an object:</u>

The height of an object after 2.5 seconds can be determined by substituting t=2.5 in the polynomial, we get;

h=-16(2.5)^2+60(2.5)+90

Simplifying, we get;

h=-16(6.25)+60(2.5)+90

h=-100+150+90

h=140

Thus, the height of an object is 140 feet.

3 0
3 years ago
Trevor Jackson wants to take out a loan in order to buy a house, so he gave the bank permission to check his credit report. Base
serg [7]

Answer:

(A) Mr. Jackson's positive accounts will be removed from his credit report in 10 years.

3 0
3 years ago
A bag of 33 tulip bulbs contains 11 red tulips, 12 yellow tulips, and 10 purple tulips. Suppose two tulip bulbs are randomly sel
Harrizon [31]
The answer will be 35/132
7 0
3 years ago
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