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Vedmedyk [2.9K]
3 years ago
5

Pat finds that the length of a ceiling beam is 114 inches what is the length of the beam in feet

Mathematics
1 answer:
lana [24]3 years ago
8 0
114 inches/12= 9.5 feet

Hope that helps.
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Which of the following is not equal to sin⁡(-230°)?
xenn [34]

From trigonometry we know that:

if sin(\theta)=sin(\alpha)

then, \theta=n\pi+(-1)^n\alpha (where n is an integer)

This can be rewritten in degrees as:

\theta=n(180^{\circ})+(-1)^n\alpha.............(Equation 1)

Now, in our case, \alpha=-230^{\circ}

Therefore, (Equation 1) can be written as:

\theta=n(180^{\circ})+(-1)^n(-230^{\circ})..........(Equation 2)

Now, to find the correct options all that we have to do is replace n by relevant integers and find the values of \theta that match.

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Thus, sin(230^{\circ})=sin(130^{\circ})

Now, we know that: -sin(-50^{\circ})=sin(50^{\circ})

Let n=-1, then:

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Thus, sin(-230^{\circ})=-sin(-50^{\circ})

Likewise, sin(-230^{\circ})=sin(50^{\circ})

Only the last option sin(-50^{\circ}) will never match sin(-230^{\circ}) because no integral value of n will ever give \theta=-50^{\circ}

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3 0
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then subtract the equations to cancel out x:

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then u get

y--3y = 2-6

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substitute to solve for x:

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x-1 = 2

x=3

check:

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3 years ago
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If x = -6, which inequality is true?
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Answer:

C. 1 - 2x > 13

Step-by-step explanation:

you just substitute

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