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solmaris [256]
3 years ago
7

What is the most reasonable answer for PI squared?

Mathematics
1 answer:
Daniel [21]3 years ago
3 0

Answer:

9.87

Step-by-step explanation:

usually in math you never have to write down what pi squared is, you just have it incorporated into your equations. But here is the best written answer.

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Number 9 and 10. Say which one you r doing plzzz
Dahasolnce [82]
Try this first :) Let me know what you come up with :)

3 0
3 years ago
What is the sound level for a noise that has an intensity of 9.9 × 10-5 watts/m2?
horsena [70]

Given: Sound Intensity ( I ) = 9.9 \times  10^{-5}\frac{watts}{m^2}

We know,  the approximate threshold of human hearing is at 1kHz. In watts/m^2 it's value is =\frac{9.9 \times  10^{-5}}{10^{-12}}⁻¹² W/m².

So, we can say,  Reference sound intensity(I_0) = 10⁻¹² W/m².

We have formula for "sound intensity level LI in dB" when entering sound intensity.

LI = 10×log (I / Io)  in dB

Plugging values of I and Io in formula.

LI = 10 × log (\frac{9.9 \times  10^{-5}}{10^{-12}})

LI = 10 × log (99000000)

= 10 × 7.99564

LI = 79.96 dB.

Therefore,  79.96 dB is the sound level for a noise that has an intensity of 9.9 × 10-5 watts/m2.

8 0
3 years ago
QUESTION in the photo
Fittoniya [83]
It is true the relationship is proportional.

hope this helps!!
3 0
3 years ago
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one box of golfballs costs $112. If you have $7290 and buy as many boxes as you can, how much money will you have left over?
Inessa [10]

Answer:

aproxitmatly 64 to be exact 64.2857

Step-by-step explanation:

Its easy all you have to do is divide 7,200 divided by 112 and eqauls 64

:) Hope you do great on it!

3 0
3 years ago
Please help, with factoring
lora16 [44]
Using the FOIL Method (First, Outer, Inner, Last) of multiplying binomials, C would be formed by the last numbers multiplied, or the "last" portion of "FOIL."

Thus, multiplying P and Q would give you C, and the answer is A.
4 0
3 years ago
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