The elimination method is a sufficient way to solve problems.
2x+y= 20
6x-5y=12
Add 5y to the one equation.
2x+6y= 20
6x= 12
Subtract 2x from both sides.
6y= 20
4x= 12
Divide 6 by 20.
y= 3.3
Divide 4 by 12.
x= 3
I hope this helped you!
Brainliest answer is appreciated!
Answer:no the -2/3 should be before -1/5
Step-by-step explanation:
Law of sines can be used to solve this problem:
(note - let x represent the missing side length.)
1. set up proportion.
sin 90°/25 = sin 55<span>°/x
2. solve.
(x) sin 90</span>° = (25) sin 55<span>°
(x) sin 90 </span>°/sin 90° = (25) sin 55° / sin 90<span>°
</span>
x = 20.4788011072
rounded to nearest tenth = 20.5
B for the first one,and C for the second
Step-by-step explanation:
i think B,C is the answer
Answer:
C. S.A. = 340.8 
Step-by-step explanation:
Area of rectangles = 6x 12 = 72
all three have the same area - 72 x 3 = 216
Area of triangle = 10.4 x 12 ÷ 2
Since there are 2 trignles - 10.4 x 12 = 124.8
Add all sides up
S.A. = 216 + 124.8
S.A. = 340.8
