Substitute y = 2x - 4 to x + 2y = 12:
x + 2(2x - 4) = 12 <em>use distributive property</em>
x + (2)(2x) + (2)(-4) = 12
x + 4x - 8 = 12 <em>add 8 to both sides</em>
5x = 20 <em>divide both sides by 5</em>
x = 4
Put the value of x to the first equation:
y = 2(4) - 4
y = 8 - 4
y = 4
<h3>Answer: x = 4 and y = 4</h3>
18.84 all you do is the v times 3.14 and that’s what you get
2 3/8 + 9/12
2 3/8 = 2 9/24. 9/12 = 18/24
2 9/24 = 57/24
57+ 18 = 75/24
75/24 = 3 3/24
3/24 = 1/8
☆ 2 3/8 + 9/12 = 3 1/8 ☆
Answer:
Plumber: 13 hours
Plumbing service: 10
Step-by-step explanation:
What you have to find is LCM(least common multiple in order to find the lcm all you have to do is list all the multiples and find their common multiple.