An easy way to think of this when you solve this, is to remember that all the angles in a triangle add up to 180 degrees. Therefore, the equation would be
(3x + 10) + (2x + 10) + 45 = 180. By the way, since the angles D and B are across from each other they are congruent. Now, let’s start solving it:
(3x + 10) + (2x + 10) + 45 = 180
(5x + 20) + 45 = 180
5x + 65 = 180
5x = 115
x = 23
Step-by-step explanation:
I assume the question is asking for Eric's grandfather age now.
Let Eric's age now be x. Then Eric's grandfather age now is (x + 55).
In 7 years, Eric's age will be (x + 7) and Eric's grandfather age will be (x + 62).
We know that (x + 62) = 6(x + 7).
x + 62 = 6x + 42
5x = 62 - 42 = 20
x = 4.
Answering the question: Eric's grandfather age now is (4 + 55) = 59 years old.
Answer:
y = 6/7x + 68/7
Step-by-step explanation:
