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AVprozaik [17]
3 years ago
12

Which expression can be used to calculate the rate per second at which the machine launches the balls?

Mathematics
1 answer:
notka56 [123]3 years ago
3 0

Answer:

The answer is 30 over 5, 30/5

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QveST [7]

Answer:

the square root of 25 is 5

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3 years ago
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Solve the equation sin2x = 3cos2x. The value of x that satisfies the equation if x lies in the second quadrant is °. The value o
faltersainse [42]

Answer:

126\degree

and

126\degree

respectively.

Step-by-step explanation:

The given trigonometric equation is

\sin2x=3\cos2x


We divide both sides by \cos2x to get,

\frac{\sin2x}{\cos2x}=3


This implies that,

\tan2x=3


We take the inverse tangent of both sides to get,


2x=\tan^{-1}(3)


\Rightarrow 2x=71.565


\Rightarrow x=35.7825

\Rightarrow x\approx 36\degree


Since the tangent ratio has a period of 180\degree, another solution is


x=180+36


x=216\degree to the nearest degree.


In the third quadrant,


2x=180+71.565


\Rightarrow 2x=251.565

\Rightarrow x=125.7825

\Rightarrow x=126\degree


The solutions are

x=36\degree,126\degree,216\degree


The value of x that satisfies the equation if x lies in the second quadrant is 126\degree


The value of x that satisfies the equation if x lies in the third quadrant is216\degree



5 0
3 years ago
I need help on my homework could someone please help me 35 pts
Y_Kistochka [10]
I believe its c if that is 31.5
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Find the value of ?<br>bhzkdkekskakak​
azamat
The value of x is 5 since 5^2=25+2=27/3=9
4 0
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Write a quadratic equation in standard form with <img src="https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B4%7D" id="TexFormula1" title
ser-zykov [4K]

Knowing the roots first write the equation in factored form:

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Now use the FOIL method ( multiply each term in one set of parentheses by each term the other set:

X•x + x•5 -3/4•x -3/4•5

Simplify:

X^2 + 5x -3/4x -3 3/4

Combine like terms:

X^2+ 4 1/4x - 3 3/4

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3 years ago
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