Given:
15 is decreased by three times a number, the result is 21.
To find:
The equation for the given statement and solve it.
Solution:
Let n be the unknown number. Then,
Three times of a number =
15 is decreased by three times a number =
It is given given that the result after subtraction is 21. So,
Divide both sides by -3.
Therefore, the required equation is and its solution is . Hence, the correct option is (a).
Without context, I can only assume that<em> e</em> is a variable, which means that it is an unknown number. Any letter can be a variable, and you solve for that variable by isolating it on one side of the equation. Example: e = 12
35.9002 that’s the answer
The general term of the given sequence is given by:
<h3>
What is a Geometric Progression and what is its General Term?</h3>
Geometric progression refers to a special progression, or a sequence of numbers, in which each successive term is a fixed multiple of the term preceding it.
For a geometric progression having first term 'a', a constant ratio of the terms be 'r' and 'n' number of terms, then:
General Term of Geometric Progression(G.P.) = , where r > 0.
Given:
Here, for the given G.P., a = 5, r =
Then, the general term = <em>, </em>if the given G.P. has 'n' terms.
To learn more about geometric progressions, refer to the link: brainly.com/question/1509142
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