<span>The sum of the
angle of a triangle is 180 degrees. It is mentioned that Hannah drew a pattern
of equilateral triangles. Equilateral triangle has three equal sides. Also, its
angles are the same, having 60 degrees at each corner of the triangle. The answer
is a. Letter b does not qualify to be an equilateral triangle because 120
degrees times 3 is greater than 180 degrees. Letter c and d exceeds the total
number of angles at 180 degrees.</span>
Step-by-step explanation:
(3х - 7y = 13)×-2
6х + y = 7
-6х +14y = -26
6х + y = 7
15y=-19
y=-19÷15=-1.26
6x+-1.26=7
6x=7+1.26
6x=8.26
x=1.37
Answer:
no
Step-by-step explanation:
it is a obtuse triangle
Answer:
1 11/80
Step-by-step explanation:
1/5 + (3/4 × 1 1/4)
1/5 + (3/4 × 5/4)
1/5 + (15/16)
16/80 + 75/80
91/80
1 11/80
