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Assoli18 [71]
3 years ago
8

5: MathXL for School: Practice & Problem Solving

Mathematics
1 answer:
aleksandrvk [35]3 years ago
3 0

Step-by-step explanation:

Perimeter=(L+W)2

L=4.5y+5Ft

W=8y-4.5Ft

(4.5y+5Ft+8y-4.5Ft)2=N Ft

(4.5y+8y+5Ft-4.5Ft)2=N Ft

(12.5y+0.5Ft)2=N Ft

25y+1Ft=N Ft

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If there is a picture could you please add it to your question?

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3 years ago
A TV programme begins at 7:45 p.m. and ends 50 minutes later<br>At what time does it finish?​
inna [77]

Answer:

<h2>8:35 p.m</h2>

Step-by-step explanation:

An hour later (60 minutes) from 7:45 p.m. is 8:45 p.m.

Subtract 10 minutes from 8:45 p.m. to get 8:35 p.m., which is 50 minutes from 7:45 p.m.

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4 years ago
3. if you want to represent geologic time with a 24-hour clock, how many years would be represented by a single second, minute a
Amanda [17]

In geologic time scale a single second = 52,083.3 years, a minute = 3,125,000 years, an hour = 187.5 million years

Geologic time, the extensive interval of time occupied by the geologic history of Earth. Formal geologic time begins at the start of the Archean Eon (4.0 billion to 2.5 billion years ago) and continues to the present day.

So the geologic time scale (GTS) contains different ranks of times about Earth, obviously you know this already. However, the GTS has these different ranks in order from shortest length of time to longest length of time.

The Earth is about 4.5 billion years old. We want to convert this geological time in a period of 24 hours. So, if 24 hours correspond to 4.5 billion years, then, 1 Hour= 4.5 billion / 24=187.5 million years. There are 60 minutes in an hour ∴ 1 minute =187.5 million /60=3,125,000 years finally, one second has 60 seconds ∴ 1 second=3,125,000 / 60 = 52,083.3 year.

learn more about geologic time here:

brainly.com/question/22502144

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