Assume
if |a|=b
a=b and -a=b
so
9|9-8x|=2x+3
divide both sides by 9
|9-8x|=2/9x+1/3
assume
9-8x=2/9x+1/3 and
-9+8x=2/9x+1/3
9-8x=2/9x+1/3
times 9 both sides
81-72x=2x+3
add 72x both sides
81=74x+3
minus 3
78=74x
divide both sides by 74
39/37=x
other one
-9+8x=2/9x+1/3
multiply both sides by 9
-81+72x=2x+3
minus 2x both sides
-81+70x=3
add 81 to both sides
70x=84
divide boh sides by 70
x=6/5
x=39/37 and 6/5
check
9|9-8(39/37)|=2(39/37)+3
2646/37=189/37
false
9|9-8(6/5)|=2(6/5)+3
351/5=27/5
false
no soltion evidently, weird
I don't get it, what are you suppose to do?
7 is the correct answer
Pls mark me as brainliest answer
Check the picture below.
let's notice that the angle -150° has a reference angle of 30°, so any trigonometric function for either angle will be the same value, however, let's recall that the sine or y-coordinate is negative on the III Quadrant, so sin(-150°) is the same as sin(30°) BUT negative, -sin(30°).
