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olasank [31]
3 years ago
5

Can someone help with this?

Mathematics
2 answers:
Zina [86]3 years ago
7 0

Answer:

C

Step-by-step explanation:

Natasha2012 [34]3 years ago
5 0

Answer:

C

Step-by-step explanation:

With $25+ and 25 -

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Ilia_Sergeevich [38]

Answer:

9

Step-by-step explanation:

3/5 * 15

Rewriting as

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9

3 0
2 years ago
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7 0
3 years ago
Solve using algebraic equation: <br> 5sin2x=3cosx<br><br> (No exponents)
DaniilM [7]
5\sin2x=3\cos x\iff10\sin x\cos x=3\cos x

by the double angle identity for sine. Move everything to one side and factor out the cosine term.

10\sin x\cos x=3\cos x\iff10\sin x\cos x-3\cos x=\cos x(10\sin x-3)=0

Now the zero product property tells us that there are two cases where this is true,

\begin{cases}\cos x=0\\10\sin x-3=0\end{cases}

In the first equation, cosine becomes zero whenever its argument is an odd integer multiple of \dfrac\pi2, so x=\dfrac{(2n+1)\pi}2 where n[/tex ]is any integer.\\Meanwhile,\\[tex]10\sin x-3=0\implies\sin x=\dfrac3{10}

which occurs twice in the interval [0,2\pi) for x=\arcsin\dfrac3{10} and x=\pi-\arcsin\dfrac3{10}. More generally, if you think of x as a point on the unit circle, this occurs whenever x also completes a full revolution about the origin. This means for any integer n, the general solution in this case would be x=\arcsin\dfrac3{10}+2n\pi and x=\pi-\arcsin\dfrac3{10}+2n\pi.
6 0
3 years ago
Profit is the difference between revenue and cost. The revenue, in dollars, of a company that manufactures televisions, can be m
Irina-Kira [14]

Answer:

50,700

Step-by-step explanation:

7 0
2 years ago
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Which equation represents a nonlinear function? <br><br> A:y=x<br> B:y=2x<br> C:y=x^2<br> D:y=x+2
N76 [4]

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Step-by-step explanation:

Option a, b and d are linear equations because they are in the form of y = mx + c which is a straight line.

7 0
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