The formula for an arithmetic sequence is as follows:
In this formula, represents the th term of the sequence and represents the common difference between each term.
Plug in the known values.
Subtract.
Multiply.
Add.
Answer:
a = 5.07
Step-by-step explanation:
Here, we want to get the value of the side marked a
What we have is a right triangle
so, to find the value of a, we are to use the correct trigonometric ratio
The angle given faces a, which makes a the opposite
the side measure faces the right angle and that makes it the hypotenuse
The trigonometric ratio that connects the two is the sine
The sine is the ratio of the opposite to the hypotenuse
mathematically;
sine 25 = a/12
a = 12 * sine 25
a = 5.07
If im not wrong...D.... would be the answer
the cost of the chocolate of 1 kg will be 30$