Y = 3x - 7 . . . . . (1)
6x - 2y = 12 . . . (2)
Putting (1) into (2) gives
6x - 2(3x - 7) = 12
6x - 6x + 14 = 12
14 = 12
Therefore, there is no solution.
The variable X is equal to 16
Answer:
Ellen have left 56 glasses to wash.
Step-by-step explanation:
Given that:
Number of glasses to be washed = 175
Percentage of glasses Ellen washed = 68%
Number of glasses Ellen washed = 
Number of glasses Ellen washed = 119
Number of glasses left = Total glasses - Number of glasses washed
Number of glasses left = 175 - 119 = 56
Hence,
Ellen have left 56 glasses to wash.
Answer:
3060
Step-by-step explanation:
First we need to calculate the total surface area of the prism
TSA = 2(lw+wh+lh)
l is the length of the prism
w is the width of the prism
h is the height of the prism
Let
L = 7m
W = 3m
H = 3m
Substitute
TSA = 2(7(3)+3(3)+7(3))
TSA = 2(21+9+21)
TSA = 2(30+21)
TSA = 2(51)
TSA = 102m²
Hence the total surface area of the prism is 102m²
Since sheet steel costs 30 for each square meter, then;
1m² = 30
102m² = x
Cross multiply
x = 30*102
x = 3060
Hence the sheet with the dimension will cost 3060
