The total amount he should pay is $69.6
20% of 58 is 11.6
11.6+58=69.6
It looks like you're trying to solve
3x₁ + 7x₂ + s₁ = 49
x₁ +4x₂ +s₂ = 31
Fill in the given values for x₁ and s₁ and your system reduces to
7x₂ = 49
4x₂ +s₂ = 31
The first of these equations tells you x₂ = 49/7 = 7, so the second equation becomes
28 +s₂ = 31
and it is immediately obvious that s₂ = 3
Your solution is (x₁, x₂, s₁, s₂) = (0, 7, 0, 3).
Hello there! The answers are -2x and -5x.
Like terms are terms that have the same x values and exponential values. Out of the options you have provided, the only terms that have like terms are -2x and -5x since they both have a value of x to the first power. 2 and 6x^2 both have different exponential values of x, so they are not like terms.
I hope this helps and have a great rest of your day!
52 = (2*W - 5) * W
52 = 2*W^2 - 5*W
0 = 2*W^2 - 5*W - 52
0 = (2W - 13)*(W + 4)
2W - 13 = 0 or W + 4 = 0
W = 13/2 or W = -4
Width cannot be negative so discard W = -4
W = 13/2 L = 2*(13/2) - 5 = 13 - 5 = 8