In 1625 CE, a monument was found in Chang'an in China that records the history of the Christian religion in China. The monument dates from 781 CE. Christianity had its beginnings in Rome, which was almost 5,000 miles away. How might the monument have gotten there?
Given:
(a+10) and (a+20) are supplementary
To find:
Each angle
Steps:
if 2 angles are supplementary that means they add up to 180°
(a + 10) + (a + 20) = 180
a + 10 + a + 20 = 180
2a + 30 = 180
2a = 180 - 30
2a = 150
a = 150/2
a = 75°
Now let's find value of each angle,
a + 10 = 75 + 10
= 85°
a + 20 = 75 + 20
= 95°
Therefore, the value of each angle is 85° and 95° respectively
Happy to help :)
If you need any help feel free to ask
2x + 5y = 3
-x + 3y = -7
multiply the second equation by 2
-2x + 6y = -14
2x + 5y = 3
-2x + 6y = -14
add two equations
2x + 5y = 3
+ -2x + 6y = -14
------------------------------
11y = -11
y= -1
substitute -1 to any of the equations
2x + 5(-1) = 3
2x - 5 = 3
2x = 8
x = 4
so the final answers are..
x = 4 , y = -1
If you’re talking about slope the answer is 3/-6 or if you simplify it the answer would be 1/-2
Hope that helps!