Question

Only answer if yk how to do this

Answer 1

Answer:

x = 25

scalene, acute

Step-by-step explanation:

Sum of the interior angles of a triangle = 180°

$\implies (2x+11)+(3x-7)+(2x+1)=180$

$\implies 2x+11+3x-7+2x+1=180$

Collect like terms:

$\implies 2x+3x+2x+1+11-7=180$

Combine like terms:

$\implies 7x+5=180$

Subtract 5 from both sides:

$\implies 7x=175$

Divide both sides  by 7:

$\implies x=25$

Substituting found value of $x$ into the three angle expressions:

∠A = (2 x 25) + 11 = 61°

∠B = (3 x 25) - 7 = 68°

∠C = (2 x 25) + 1 = 51°

This is a scalene triangle as it has three different angles and three different side lengths (non-congruent).

It is also an acute triangle as all interior angles are less than 90°

Answer 2

X=25 because a triangle is 180° so 2x+11+3x-7+2x+1=180