Factor completely. x^2+3x−40
2 answers:
Factorised form: 
Explanation:
This is a quadratic equation, so the easiest way to solve this is by splitting up the middle term. What are two numbers that when multiplied gives -40, and adds to give 3? (8, -5)
You can then split up the middle term like so:
x² + 8x - 5x - 40 = 0
and factorise x² + 8x and -5x -40.
x(x + 8) -5(x + 8) and group together like terms:
Explanation:
This is a quadratic equation, so the easiest way to solve this is by splitting up the middle term. What are two numbers that when multiplied gives -40, and adds to give 3? (8, -5)
You can then split up the middle term like so:
x² + 8x - 5x - 40 = 0
and factorise x² + 8x and -5x -40.
x(x + 8) -5(x + 8) and group together like terms:
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Answer:
A) 1:4
Step-by-step explanation:
#We first calculate the campus' area:
#We then calculate the campus' map area in square ft:
Ratio is a comparison between two dimensions:
Hence, the ratio of the area in square miles of the campus to the area in square feet of the map is 1:4
Answer:
Step-by-step explanation:
Given that three airlines serve a small town in Ohio. Airline A has 52% of all scheduled flights, airline B has 27% and airline C has the remaining 21%.
Their on-time rates are 83%, 66%, and 36%, respectively.
Airlines A B C
Flights 52% 27% 21% 100%
On time rates 83% 66% 36%
Flight*online rates 43.1600% 17.8200% 7.5600% 68.5400%
Thus the above table shows the product of no of flights and on time rates.
Prob it was airline A given it left on time
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