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3 years ago

Help! I’ll mark brainlest :(

Mathematics

1 answer:

disa [49]3 years ago

7 0

Answer:

I'm guessing its b, but I'm not too sure

Step-by-step explanation:

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Write 0.45 as a fraction in simplest form

Natasha2012 [34]

First you need to set up your decimal as a fraction

45 9
---- divided by 5 ------
100 20

9/20 is your answer

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3 years ago

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Bezzdna [24]

If you use the formula V=bh you can find the volume of a tranangular prism.
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3 years ago

A a squirrel ran 9 miles in one hour. which expression can be used to determine its speed in miles per hour?

julsineya [31]

The unit rate is 9 miles per hour.

In order to find how much its unit rate will be you need to use this expression below.

n = number of hours

m = number of miles

m divided by n or m/n

In order to find how much does he travel in given hours see this below.

n = number of hours

m = number of miles for 1 hour

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3 years ago

A local am radio station broadcasts at a frequency of 764 khz. calculate the energy of the frequency at which it is broadcasting

pentagon [3]

The frequency of the emitted radio waves is:
$f=764 kHz = 7.64 \cdot 10^5 Hz$

The energy of a photon is given by:
$E=hf$
where h is the Planck constant and f is the photon frequency. Using the frequency given by the problem, we can find the energy of each photon of this radiation:
$E=hf=(6.6 \cdot 10^{-34} Js)(7.64 \cdot 10^5 Hz)=5.04 \cdot 10^{-28} J=5.04 \cdot 10^{-31} kJ$

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3 years ago