The lines are perpendicular if their slopes are negative reciprocal of the other.
Since 9/2 is just a reciprocal and not the NEGATIVE reciprocal of 2/9, the lines are NOT perpendicular.
You multiply everything in the parenthesis by the number outside.
In this case its 2 and -1. the first part is 2a-8 the second part is 4a -2a+16a
so it looks like this 2a-8=4a-2a+16a.
combine like terms and get 2a-8=18a.
Subtract the other 2a from the other side and you have 8=16a
divide each side by 16 and you have 8/16 which is one half.
It beats 44 times in a minute
132 / 3 = 44
Answer:
add +y to both sides
Step-by-step explanation:
10 - y = 2y + 3
+y +y
^it will cancel out the -y
10=3y+3
5 + 2x ≤ 30
2x ≤ 25
x ≤ 12.5
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