Answer:
the first one
Step-by-step explanation:
ive done this before
3 ( 3x + 6 + x ) = 1
Step 1, apply distributive method.
9x + 18 + 3x = 1
Step 2, simplify the following
12x + 18 = 1
Step 3, Change side
12x = -17
Final answer
x = -17/12
<em>The </em><u><em>error/mistake was in step 2</em></u><em> where [ 9x +3x = 12x ]</em>
<em />
<u><em>Recheck the answer</em></u>
3 ( 3x + 6 + x ) = 1
3 ( 3(-17/12) + 6 + -17/12 ) = 1
1 = 1
Hence proved our solution is correct.
First you would find how much 35 percent of 600 is using 600/100 to find the value of one percent. One percent equals 6 pounds.
Answer:
18 cm and 42 cm
Step-by-step explanation:
a = wl
7w = 3l, then l = 7/3w
756 = w(7/3w)
756 = 7/3w²
w² = 324
w = 18
l = 42