9514 1404 393
Answer:
Step-by-step explanation:
If we let x and y represent the costs of a lamp and end table, respectively, the two purchases can be written as ...
3x +2y = 520
2x -y = 20
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These equations can be solved many ways. If we use "elimination", we can add twice the second equation to the first to eliminate y:
(3x +2y) +2(2x -y) = (520) +2(20)
7x = 560 . . . . simplify
x = 80 . . . . . . divide by 7
y = 2x -20 = 2(80) -20 = 140
The cost of a lamp is $80; the cost of an end table is $140.
“Unit rate” is a comparison of any two separate but related measurements when the second of these measurements is reduced to a value of one. Calculating the unit rate in any set of circumstances will require the use of division.
Hello!!
Ok so if 8 laps is 1 mile, then 3/8 of a mile is 3 laps. Think if 8laps is 1 mile then each lap represents 1/8 mile so 3/8 mile is equal to 3 laps!
Hope this helps u understand! Any questions please ask!! Thank you so much!!
Answer:
93.31200 dollars
Step-by-step explanation:
8% of 1166.40
10/18 is equal to 0.55
Change to percentages and it will be 55 percent
