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3 years ago

What is d/dx(1/sinx) ...?

Mathematics

1 answer:

tester [92]3 years ago

7 0

$\frac{d}{dx} \frac{1}{\sin{x}}= \frac{d}{dx}\sin^{-1}{x}=-1 \frac{d}{dx}\sin{x}=-(-\cos{x})=\cos{x}$

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Evaluate each expression please help(the crossed out ones are irrelevant)

olga nikolaevna [1]

9. 31 + 5 = 36
10. 16 - 4 = 12
12. 9
13. 44 + 34 = 78
14. 101 - 1 = 100

15. -539 ???
16. 15 ??
17. |-435| = 435

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3 years ago

What is the area of the parallelogram?

nika2105 [10]

Step-by-step explanation:

The answer is in the picture Hope it helps

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the legs of a right triangle are 4 units and 7 units. What is the length of the hypotenuse? Select one: a. square root 33 units

Mrac [35]

$\bf \textit{using the pythagorean theorem} \\\\ c^2=a^2+b^2\implies c=\sqrt{a^2+b^2} \qquad \begin{cases} c=hypotenuse\\ a=adjacent\\ b=opposite\\ \end{cases} \\\\\\ c=\sqrt{4^2+7^2}\implies c=\sqrt{65}$

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3 years ago

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Find a formula for the general term an of the sequence, assuming that the pattern of the first few terms continues. (Assume that

Allushta [10]

Answer:

The general term for the sequence can be given by the following formula:

$a_n=2\,n+9$

Step-by-step explanation:

If the sequence you typed starts with first term 11 and continues with terms 13, 15, 17, 19, We understand that the sequence is formed by adding 2 units to the previous term. So we are in the case of an arithmetic sequence with constant difference (d) = 2, and with first term 11.

Therefore, the nth term of this arithmetic sequence can be expressed by using the general form for an arithmetic sequence as:

$a_n=a_1\,+\,(n-1)\,d\\a_n=11\,+\,(n-1)\,2\\a_n=11+2\,n-2\\a_n=2\,n+9$

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3 years ago

Solve number 25 pls i dont know how to put it into an equation

Allushta [10]

Answer:

Equation to solve is x+x+120=180

Solution to equation: x=30

Step-by-step explanation:

The angles in a triangle have a sum 180 degrees.

You know one angle is 120 degrees.

If you assume another angle has a measurement of x degrees, then the remaining angle has a measurement of x degrees. We know this because congruent means they will have the same measurement.

So we have this equation to solve:

x+x+120=180

Combine like terms:

2x+120=180

Subtract 120 on both sides:

2x=180-120

Simplify:

2x=60

Divide both sides by 2:

x=60/2

Simplify:

x=30

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3 years ago