Answer:
Step-by-step explanation:
Let determine the angles behind each trigonometric expression:
Given that , the value of is:
Given that , the value of is:
The sine function of the sum of angles can be determined by the following identity:
If and , then:
Ratio 1:3 can be written as 1/3
sale price / original price : 1/3 = x / 81
this is a proportion, so we cross multiply
(3)(x) = (1)(81)
3x = 81
x = 81/3
x = 27 <== sale price
and notice that 1/3 = 27/81...these are equivalent fractions because that is what proportions are, equivalent fractions
Answer:
n = the number
The words of the problem statement translate into algebra as
6n - 3 = 4n + 11
Solve for n.
2n = 14
n = 7
Step-by-step explanation:
They are have s0mething that is positive. This is what I think.