Addition means adding for exanple
3+3=6
Answer:
x * 17.5 = y
Step-by-step explanation:
Answer: <u>C. 20-.40p</u>
Step-by-step explanation:
We know that from the given information that each pound is worth 40 cents, and that its being subtracted from the twenty dollar bill.
"Why are the others choices wrong?"
A. p-20, isn't the proper equation due to the stated information.
B. B. 20 -40p, this equation has Zelma pay $40 dollars each pound, which isn't correct due to what the text has stated ("for 40 cents per pound").
D. 40p-20, from the given text, this equation is wrong ("She pays the clerk with a twenty-dollar bill), it never states that she will be charged twenty dollars, or be given forty for each pound.
Another person who asked the same question:
brainly.com/question/9419974
Answer:
One solution
Step-by-step explanation:
They have isolated y for you in both equations so you can plug either one into the other.
y = 3x - 1
2x + 7 = 3x - 1
isolate the x
7 = x - 1
x = 8
Go back to the original and plug 8 into x to get y.
y = 2 (8) + 7
y = 16 + 7
y = 23
This means at (8, 23) y = 2x+7 is equal to y = 3x-1. In other words they share a point at (8, 23). This is the only solution because for any other x and y they'd not be equal.
