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gogolik [260]
3 years ago
14

A book sold 31,100 copies in its first month of release. Suppose this represents 6.2% of the number of copies sold to date. How

many copies have been sold to date?
Round your answer to the nearest whole number.
Mathematics
1 answer:
nydimaria [60]3 years ago
4 0

Answer:

501613 books

Step-by-step explanation:

6.2% of x is 31,100

6.2%=6.2/100=62/1000

(62/1000)*x=31,100

x=31,100/(62/1000) [divide both sides by 62/1000]

x=501612.90=501613 (rounded up)

Hope this helps!

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Answer:

Step-by-step explanation:

1.

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either c=8-9=-1

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3 years ago
If cos(x)=1/4 what is sin(x) and tan(x)
anygoal [31]
You can use the identity
  cos(x)² +sin(x)² = 1
to find sin(x) from cos(x) or vice versa.

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There are two possible answers.
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4 years ago
A fire department's ladder is 110 feet long. A firefighter is trying to reach the top of a 100 foot building by leaning the ladd
Alekssandra [29.7K]

Answer:

sin-¹(10/11)

Step-by-step explanation:

The height of the building is 100 ft and the ladder is 110ft long .We can imagine this situation as a right angled ∆. For figure refer to the attachment .

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<u>In </u><u>∆</u><u> </u><u>ABC </u><u>:</u><u>-</u><u> </u>

=> sinθ = p/h

=> sinθ = 100ft / 110 ft

=> sinθ = 10/11

=> θ = sin -¹ ( 10/11) .

<h3><u>Hence </u><u>the</u><u> </u><u>angle</u><u> of</u><u> elevation</u><u> </u><u>is </u><u>sin </u><u>-</u><u>¹</u><u> </u><u>(</u><u> </u><u>1</u><u>0</u><u>/</u><u>1</u><u>1</u><u>)</u><u>. </u><u> </u></h3>

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anyanavicka [17]
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