Line 1 only should be the answer!
Those are the answers
2x-2
6x+9
7x+35
10x-5y
sin x = cos 54 = sin (90-54) = sin 46
Hence x = 46 deg
Same technique. Sin 21 = cos (5x+9) = sin (90-5x-9)
81-5x = 21
Or 5x = 60
Or x = 12 deg
hope it helps
Answer:
90x^2+134x+48
Step-by-step explanation:
To get the area of a classroom you just multiply the length times the width
Answer:
13
Step-by-step explanation:
x+y+z;
Let x=4, y=3, z=6
4+3+6
13