In order to solve equations like these, you need to move all terms involving the variable on one side, and all the numeric constants on the other side.
To do so, we can add/subtract the same quantity to both sides.
For example, we can add 5.2 to both sides to get
Then, we can add all the terms on the left hand side, and we have
Finally, we can divide both sides by -3.14:
In order to check the solution, we have to plug the value we found for x in the initial equation:
which is clearly true.
Visualize the image in your mind and you can see that it forms a right angled triangle with a base,altitude and hypotenuse
base=2 feet
hypotenuse(ladder)=13 ft
We need to find the altitude,
By applying pythagoras theorem,
base square+altitude square=hypotenuse square
Take altitude as x
2 square+x square=13 square
4+x square=169
x square=169-4
x square=165
x= root of 165
x=12.8 feet(approx.)
(√6,0) (√5,-1) (-√6,0) (-√5,-1)
Answer:
Option C) supplementary
Step-by-step explanation:
see the attached figure to better understand the problem
we know that
If two angles are supplementary, then their sum is equal to 180 degrees
In this problem
The measure of angles are
60° and 120°
Their sum is equal to
60° + 120°=180°
therefore
The two angles are supplementary
