Answer:
Step-by-step explanation:
5x+9y=-3 Multiply both sides by 8
40x+72y=-24
-53x-8y=-3 Multiply both sides by 9
-477x -72y= -27
sum the equations vertically to eliminate one variable
40x+72y= -24
-477x-72y= -27 (the y cancels out )
-477x =-51 (-24 + -27=-51)
-477x=-51 / -477 divide both sides by -477
x =51/437
5x 51/437=9y= -3 substitute the value of x
y= -174 /437
(x,y) = (51/437, -174/437)
Sector Area = (central angle / 360) * PI * radius^2
Sector Area = 300 / 360 * PI * 8^2
Sector Area = (5/6) * 64 * PI
Sector Area = 53.3 * PI
Source:
http://www.1728.org/radians.htm
Answer:
SAS, Triangle ABC is congruent to triangle DEF.
Step-by-step explanation:
We name triangles with a triangle symbol and in alphabetical order. To write a statement, name each triangle and place a congruent sign between them.
To determine what postulate, look at the arrangement of congruent parts which is side-angle-side. This is SAS.
Answer: D
Step-by-step explanation:
