Answer:
let the equal sides of the triangle be of length "a" . let the angle between these two sides be " x ". Then drop a perpendicular from the vertex to the base. now u have 2 similar triangles .the angle between the perpendicular and one of the equal sides is now (x/2) . length of perpendicular = a cos(x/2) length of base = 2a sin(x/2) . area of triangle = (1/2) 2sin(x/2) cos(x/2) a-square
= (1/2) (sin x) a-square
Answer:
21^2 − 14 − 7
Step-by-step explanation:
(3+1)(2+5−7)
(3x+1)({\color{#c92786}{2x}}+{\color{#c92786}{5x}}-7)
(3x+1)(2x+5x−7)
(3+1)(7−7)
(3x+1)({\color{#c92786}{7x}}-7)
(3x+1)(7x−7)
2
Distribute
3
Distribute
again
4
Multiply by 1
5
Combine like terms
Solution
21^2 − 14 − 7
if you mean what is half of 85, it's 42.5
35n=280
n=8 8 dimes and 8 quarters
Answer:
let'ssssssssss gooooooooooooooooooooooooooooooooooooooooooooooooo
Step-by-step explanation:
