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4 years ago

What is the measure of QR to the nearest hundredth of a centimeter?

Mathematics

1 answer:

kicyunya [14]4 years ago

3 0

Sin 49 = QR/12.38
QR = 12.38 sin 49
QR = 9.34 cm.

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Which expressions are equivalent to 1/2+3c+4/5?Check all that apply.

Kipish [7]

Answer: A, C and E.

Step-by-step explanation:

The expressions 1/2 + 3c + 4/5 is thesame as writing 3c + 1/2 + 4/5, 1/2 + 4/5 + 3c, 4/5 + 1/2 + 3c, 3c + 1/2 + 4/5.

In all the expressions written above, the only thing that can be seen is just that the position of the numbers were alternated.

Therefore, based on the options given, the answer will be A, C, and E.

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Vladimir79 [104]

Answer:

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Step-by-step explanation:

So we have the equation:

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$(x+5)-5=(-2)-5$

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Subtract on the right.

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FromTheMoon [43]

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Step-by-step explanation:

using the proportion we have x= (5*126)/11= 57.27

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3 years ago

Usually Ellis rides his bicycle 6 1/2 miles a day. Today he rode half his usual distance. How far, in miles, did he ride?

Radda [10]

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Step-by-step explanation:

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2 years ago

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What is the frequency of the sinusoidal graph?

FrozenT [24]

Answer:

$\boxed{f=\dfrac{3}{2\pi}}.$

Step-by-step explanation:

Notice that the wave completes 3 oscillations at $x=2\pi$ . This means that the period is:

$T = \dfrac{2\pi}{3}.$

Since the frequency is the reciprocal of the period, we get:

$f= \dfrac{1}{T} = \dfrac{1}{2\pi/3} = \dfrac{3}{2\pi}.$

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$\boxed{f=\dfrac{3}{2\pi}}.$

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4 years ago