Xy = 22
1 1
Cross multiply:
xy * 1 = 1 * 22
Simplifying
xy * 1 = 1 * 22
Reorder the terms for easier multiplication:
1xy = 1 * 22
Multiply 1 * 22
1xy = 22
Solving
1xy = 22
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Divide each side by '1y'.
x = 22y-1
Simplifying
x = 22y-1
150 because 6 times 5 is 30 then you multiply whats inside the square root thing so you'd get 25, 25 is a perfect square which simplifies to 5 then 5 times 30 is 150.
The correct answer is option A
A) Equation 1 and equation 2 have no solutions
For the equation 1
l 3x-1 l +7=2
l 3x-1 l = 2-7 =-5
The absolute value should be positive
So, there is no solution
For the equation 2
l 2x+1 l +4 = 3
l 2x+1 l = 3 - 4= -1
The absolute value should be positive
So, there is no solution
no. of right answers = 60
no. of wrong answers = 40
18 times 4 = 72
Both started with 72 Martha sold more
