An isosceles triangle in which the two equal sides, labeled x, are longer than side y. The isosceles triangle has a perimeter of
7.5 m. Which equation can be used to find the value of x if the shortest side, y, measures 2.1 m?
1 answer:
You might be interested in
Answer:
x < -2.5 and x > 1
Step-by-step explanation:
Answer:
scalene
Step-by-step explanation:
step 1
Find the value of y
we know that
The sum of the interior angles in a triangle must be equal to 180 degrees
In this problem
m∠A+m∠B+m∠C=180°
substitute the given values
Solve for y
step 2
<em>Find the measure of angle B</em>
m∠B=(y+40)°
substitute the value of y
m∠B=(15+40)=55°
step 3
<em>Find the measure of angle C</em>
m∠C=(3y-10)°
substitute the value of y
m∠C=(3(15)-10)=35°
The three interior angles are different
so
The three sides of the ABC triangle will also be different
therefore
The right triangle ABC is scalene