Answer: (7x + 3)(7x -3)
Step-by-step explanation:
Create equations:
10X+15y=2575.
X+Y=210.
Solve for X: X=210-Y, and sub it into the other equation: 10(210-Y)+15Y=2575. Solve for Y: 2,100-10y+15y=2575, 5y=475, y=95.
Sub Y into the original problem: X+95=210. Solve: X=115.
The first mechanic charges $115 per hour and the second charges $95 :)
To find how much time the machine that took the longer job is, you would create an equation in terms of X, the amount of time it takes one of the machines.
Please see the attached picture for the work.
51 minutes is the longer time.
34 minutes for the other machine.
Answer:
(x/-5)-4
Step-by-step explanation:
quotient means division
so the quotient of x & -5 can be written as x/-5
4 less than this is (x/-5)-4
The correct answer for the question that is being presented above is this one: "D. 3 and 60." The means of the proportion is 15 and 12. <span>The </span>means-extremes<span> property of </span>proportions<span> allows you to cross multiply, taking the product of the </span>means and setting them equal to the product of the extremes<span>. </span>
