Answer:
x = 45
Step-by-step explanation:
To find x, derive an equation from the figure given.
Angles on a straightline = 180°. Therefore:

Combine like terms


Subtract 135 from both sides


Answer:
you turn the feet into inches and then add them together.
Example 1 ft = 12 inches + 5 inches = 17 inches
The Answer here and if u want to solve something from math u can use photo math
Answer:
During the first year he had an annual interest of 12%, and in the second year of 25%
Step-by-step explanation:
To calculate the interest of the first year:
(Initial capital of the first year / final capital of the first year) - 1 = interest of the first year
(300/336) - 1 = 0.12 = 12%
To calculate the interest of the second year:
(Initial capital of the secondyear / final capital of the second year) - 1 = interest of the second year
(336/420) - 1 = 0.25 = 25%