Answer:
100
Step-by-step explanation:
The original area is (200 m)×(300 m) = 60000 m². You want an area that is ...
(200 +x)×(300 +x) = 120000
60000 +500x +x² = 120000 . . . . eliminate parentheses
x² +500x -60000 = 0 . . . . . . . . . . subtract 120000
(x +600)(x -100) = 0 . . . . . . . . . . . . factor
The positive value of x that makes a factor zero is x = 100.
The value of x is 100.
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<em>Check</em>
The larger plot will be 300×400, the larger dimension being double the original smaller dimension.
Answer:
0
Step-by-step explanation:
1. Find LCD
LCD=21
2. Convert all fractions to fractions with the LCD
3. Solve
Collect like terms:
(7x+4x)−2y
Simplify:
11x-2y
Answer: 60
Step-by-step explanation: -4x-15=60
for the first one you can use division.
The second one is subtract 39.
