X + y = 5
xy = 12
x + y = 5
y = -x + 5
xy = 12
x(-x + 5) = 12
x(-x) + x(5) = 12
-x² + 5x = 12
- 12 - 12
-x² + 5x - 12 = 0
x² - 5x + 12 = 0
x = 5 ± √25 - 48
2
x = -5 ± √-23
2
x = -5 ± 4.79i
2
x = -5 + 4.79i or x = -5 - 4.79i
2 2
x = -2.5 + 2.395i or x = -2.5 - 2.395i
y = -2.5 - 2.395i or y = -2.5 + 2.395i
The two numbers that add up to 5 and multiply to 12 is -2.5 ± 2.395i, which is -2.5 + 2.395i and -2.5 - 2.395i.
20 jasmine flowers? just do tally marks and count how many times you did them because each tally has five so you subtract the four from the five and count the tallys you have left
Answer:
60 km/h
Step-by-step explanation:
60/40=1.5
90/1.5=60
Let:
x = Pastries ordered
y = Cost of order
For each pastry Cole ordered, the cost of the order increased by a fixed amount of $1.55
The answer is A) 31/8 and 25/8. Would you like me to list the steps?
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