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dangina [55]
3 years ago
13

The sum of a number and 15

Mathematics
1 answer:
ollegr [7]3 years ago
6 0

Answer:

x + 15

Step-by-step explanation:

The problem is in word form. Write the problem in <u>algebraic form</u>, which means using numbers and symbols (like + - ÷ x).

Take the key word:

'sum' - This means the answer when you <u>add numbers</u>. To add you use the + <u>plus sign</u>.

The sum of a number and 15 means adding a number and 15.

There is no equal sign because the question does not say "equals" or "is".

<u>Choose a variable</u> to represent "a number". I will choose the letter 'x'. Add 15 to 'x'.

x + 15

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Hope that helps :D

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3 years ago
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Burka [1]

Answer:

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2 years ago
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Find the rectangular coordinates of the point (squareroot3, pi/6)
svet-max [94.6K]

Answer:

The rectangular coordinates of the point are (3/2 , √3/2)

Step-by-step explanation:

* Lets study how to change from polar form to rectangular coordinates

- To convert from polar form (r , Ф) to rectangular coordinates (x , y)

 use these rules

# x = r cos Ф

# y = r sin Ф

* Now lets solve the problem

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∴ r = √3 and Ф = π/6

- Lets find the x-coordinates

∵ x = r cos Ф

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