Answer:
x = 15
Step-by-step explanation:
Angles in a triangle add up to equal 180
Hence, 3x + 5x + 4x = 180
( Note that we've just created an equation that we can use to solve for x)
We now solve for x using the equation created
3x + 5x + 4x = 180
Combine like terms
12x = 180
Divide both sides by 12
x = 15
Answer:
186.66
Step-by-step explanation:
Answer:
special right triangles
Step-by-step explanation:
A special right triangle is a right triangle with some regular feature that makes calculations on the triangle easier, or for which simple formulas exist. For example, a right triangle may have angles that form simple relationships, such as 45°–45°–90°.
hope it helps!
Answer:
yes you're right :)
Step-by-step explanation:
you have to use the pythogram therom for this
a² + b² = c²
20² + 10² = c²
400 + 100 = c²
c = √500
Answer:
-13
Division
Step-by-step explanation:
divide both sides by -17 in order to find the value of x