Answer:
BC = 144 units
Step-by-step explanation:
BC = BD + DC , substitute values
8x = 4x + 10 + 3x + 8 = 7x + 18 ( subtract 7x from both sides )
x = 18
Thus
BC = 8x = 8 × 18 = 144 units
The statement on the bottom left is correct. (6 students studied for 20 to 24 hours)
Answer:
$5
Step-by-step explanation:
So we know that altogether Michael paid $12 right?
So if his brother's price is x then his price is x+2
so 2x+2=12 x=5
Michael's brother's price was $5
and his was $7
Answer:
x = 17/18
Step-by-step explanation:
-5(7-8x) -7x = -(3x+1)
-35 + 40x - 7x = -3x - 1
-35 + 33x = -3x - 1
33x + 3x = -1 + 35
36x = 34
x = 34/36
x = 17/18
0.0340909091 is the answer