2 years ago

How many different 2-person conversations would happen at a party of 30 people

Mathematics

1 answer:

tigry1 [53]2 years ago

7 0

15 because simple division 30 divided by 2 is 15 only 15 can happen

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How do the expressions 72 / 9 and -72/ (-9) compare when they are evaluated?

Artemon [7]

Answer:

Step-by-step explanation:

72/9=8

-72/-9=8 because negative/negative=positive.

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3 years ago

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Ellie practices piano 2/3 h per day, several days each week. She practiced piano 32 2/3 hours during the summer. What equation c

SVEN [57.7K]

hello :)

so let me just give you the answer first:

2/3 * d = 32 2/3

here is why

so since the sentence said 2/3 PER day, then d (the number of days) multiplied by the time spent each day playing piano should give you how much time was spent in total over the certian number of days.

the 32 2/3 is just the amount of time ellie spent (as you have said)

so, this equation would be the correct one.

i hope this helped you out! please vote me for brainliest and have splendid day!

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3 years ago

Use the law of sines to find what Angle R is:

stich3 [128]

Answer:

Step-by-step explanation:

So, according to the law of Sines, we have

$\frac{Sin(A)}{a} = \frac{Sin(b)}{b}$

In our case, we have S and R, so...

$\frac{Sin(S)}{s} = \frac{Sin(R)}{r}$

And we want to isolate R...

$r = sin^{-1} (\frac{Sin(S) * r}{s} ) = sin^{-1} (\frac{Sin(52) * 32}{26} ) = 75.90$

the angle of R is then 75.90 degrees.

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3 years ago

Ronny read for 2.75 hours yesterday. His older brother read for 1.18 hours and his younger brother read for 0.43 hours. How much

Fittoniya [83]

I'm pretty sure its 1.14 :)

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3 years ago

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(a) (-3) × _____ = 4 × _____

Igoryamba

Answer:

_3×4=4×_3=-12,pardon me if I am wrong I am just a beginner ❤

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2 years ago

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