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3 years ago

Please answer this, i will give brainliest. lol

Mathematics

1 answer:

Mila [183]3 years ago

4 0

Answer:

Step-by-step explanation:

10-43:

A. To get the area of a circle, multiply the diameter (20cm), by pi. (3.14)

B. Area=314.16cm²

10-45:

A. 30%.

B. The waterpark and the amusement park.

C. I would recommend doing another survey between the waterpark and the amusement park.

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5Y+8 -ly-8-8y-1" Your answer

gulaghasi [49]

Answer:

$-4y-1$

Step-by-step explanation:

$(5y+-y+-8y)+(8+-8+-1)$

$-4y-1$

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3 years ago

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The inverse variation equation shows the relationship between wavelength in meters, x, and frequency, y.

Vaselesa [24]

Answer: The wavelength for X-rays with the given frequency is $1\times 10^{-10}m$

Step-by-step explanation:

To calculate the wavelength of light, we use the equation:

$\lambda=\frac{c}{\nu}$

where,

$\lambda$ = wavelength of the light

c = speed of light = $3\times 10^8m/s$

$\nu$ = frequency of light = $3\times 10^{18}s^{-1}$

Putting the values in above equation, we get:

$\lambda=\frac{3\times 10^8m/s}{3\times 10^{19}s^{-1}}=1\times 10^{-10}m$

Hence, the wavelength for X-rays with the given frequency is $1\times 10^{-10}m$

7 0

3 years ago

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I suck at this stuff can someone help me out? thank you!

avanturin [10]

A) h=9.9
if that's not correct, i've done these before, i don't know why it wouldn't work?

3 0

3 years ago

Plzz help me im giving 12 points

Serggg [28]

This Is very simple.

30m + 50 = 20m + 100

This is the new equation needed to solve for m.
first we must isolate "m".

30m + 50 = 20m + 100
- 50 - 50

30m = 20m + 50
-20m -20m

10m = 50

divide both sides by 10 to isolate "m".

m = 5

hope this helps!

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3 years ago

The cost of Samantha's 15th birthday party depends on the number guest. The hall charges $250 for the use of the hall plus $12 p

Scorpion4ik [409]

Answer:

Equation: y=x(12)+250

Total cost: $550

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3 years ago