Classify the triangle by its sides, and then by its angles. 60 degrees
60 degrees
60 degrees
4 ft
4 ft
4 ft
Classified by its sides, the triangle is a(n)
▼
equilateral
scalene
isosceles
triangle.
Classified by its angles, the triangle is a(n)
▼
obtuse
acute
right
triangle.

Equilateral, acute

Step-by-step explanation:

Equilateral triangles have all sides the same length (all sides are 4 ft in this triangle, so it is equilateral).

Acute triangles have no angles that are greater than or equal to 90 degrees (all angles are 60, which is less than 90, so it is acute).

A] The least square estimation that models that data will be given as follows:
m(x-x1)=y-y1
where:
slope,m=(y-y1)/(x-x1)
m=(5.15-3.8)/(1997-1990)
m=0.193
taking 1978 as our x=0, 1990 will be x=12
thus the equation will be:
0.193(x-12)=y-3.8
0.193x-2.316=y-3.8
thus
y=0.193x+1.484

b]
The minimum wage in 2025 will be as follows:
x=2025-1978=47
thus plugging the values in the equation we get:
y=0.193(47)+1.484
y=10.555