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cluponka [151]
3 years ago
15

Put in standard form: (2r2+1)-(2r3+6r+1)

Mathematics
1 answer:
Sonbull [250]3 years ago
3 0

Answer:

Step-by-step explanation:

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A sound wave travels at 330m/s and has a wavelength of 2 m. calculate its frequency and period.
RoseWind [281]

Answer:

frequency= 165Hz

period= \frac{1}{165}

Step-by-step explanation:

1. To calculate the frequency using the formula:

f = v/λ

where,

f=frequency (what the question asked)

v=speed of wave (given in the question=330m/s)

λ=wavelength (given in the question=2m)

SO,

f=\frac{330}{2}

= 165Hz

2. To calculate the period use the formula:

since f=\frac{1}{T}

therefore, T=\frac{1}{f}

where,

f= frequency (what we solved above=165Hz)

T= period (what the question asked)

SO,

T=\frac{1}{165}

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2 years ago
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Hopefully this helps

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3 years ago
A student with two summer jobs earns $10 per hour at a cafe and $8 per hour at a market the student would like to earn at least
o-na [289]
$80*10=$800. Hope this helps
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3 years ago
Which of the following tables of equivalent ratios is
RideAnS [48]

Answer:

all of them in the picture are equivalent

Step-by-step explanation:

Sorry if its wrong I think you missing some of the work but hope this helps!

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3 years ago
A figure with length and width but no depth is called
Volgvan

Answer:

a plane

Step-by-step explanation:

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