Px - 45 = QX + 75
Px - Qx = 75 + 45 = 120
A. If P = - 45 and Q = - 75, then
- 45x + 75 x = 120
30x = 120 and x = 40
B. If P = 45 and Q = - 15, then
45x - 15x = 120
30x = 120
x = 40
D. If P = 15 and Q = 75, then
15x - 75x = 120
- 60x = 120
x = - 2
C. If P = 15 and Q = 15, then
15x - 15x = 120
0 = 120 which is absurd.
Hence, P = 15 and Q = 15 result in an equation with no solution.
Answer:
Both spaces have the same amount of brightness per square meter.
Step-by-step explanation:
Nayeli: 12 candles / 4 square meters is the same as 3 candles per square meter.
Citlali: 30 candles / 10 square meters is the same as 3 candles per square meter.
So both Nayeli's and Citlali's spaces have the same amount of brightness per square meter.
-6 + 5
= -1.
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