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3 years ago

What is the reverse of add 1

Mathematics

2 answers:

horsena [70]3 years ago

5 0

Answer:

subtract 1

Step-by-step explanation:

the reverse of "add" is to "subtract"

Aleksandr-060686 [28]3 years ago

4 0

Subtract 1

Hope this helps! ;)

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#5 please help me thank you.

saul85 [17]

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Area = (n yds + 40 yds) * 30 yds

or
Area = (30 yds * n yards) + (30 yds * 40 yards)
This is if you add the area of the rides to the area of the arcade (the first parenthesis is the rides, the second is the arcade.)

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Anna71 [15]

Answer:

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Step-by-step explanation:

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3 years ago

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mr_godi [17]

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3 years ago

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Please help! <br> Express 35 marks out of 40 as a percentage.

Blizzard [7]

Answer:

$\huge\boxed{\sf 87.5 \ \%}$

Step-by-step explanation:

35 marks out of 40<u> as a fraction:</u>

35 / 40

<u>As a percentage:</u>

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Hope this helped!

7 0

3 years ago

Find the exact value of cos 120° in simplest form with a rational<br> denominator.

IRINA_888 [86]

Given:

cos 120°

To find:

The exact value of cos 120° in simplest form with a rational denominator.

Solution:

We have,

$\cos 120^\circ$

It can be written as

$\cos 120^\circ=\cos (90^\circ+30^\circ)$

$\cos 120^\circ=-\sin 30^\circ$ $[\because \cos (90^\circ-\theta)=-\sin \theta]$

$\cos 120^\circ=-\left(\dfrac{1}{2}\right)$ $[\because \sin 30^\circ=\dfrac{1}{2}]$

$\cos 120^\circ=-\dfrac{1}{2}$

Therefore, the exact value of cos 120° is $-\dfrac{1}{2}$ .

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2 years ago