The y-intercept exists when x = 0, so the y-intercept is (0, 30). The zeroes are found by factoring. You can simplify that a bit by factoring out a 6: 
. Now factor that using the quadratic formula because the solutions are not real. 
which simplifies to 
and in the end we have 
Please help me with acellus
1 answer:
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Answer:
The speed of George the Pigeon in still air = 21 miles/hr
The speed of air = 3 miles/hr
Step-by-step explanation:
Let the speed of George the Pigeon in still air = miles/hr
Let the speed of air = miles/hr
Distance traveled = 72 miles
Relative speed against the wind = miles/hr
Time taken against the wind = 4 hours
Relative speed with the wind = miles/hr
Time taken against the wind = 3 hours
Using the formula:
Adding (1) and (2):
By equation (1):
Therefore, the answer is:
The speed of George the Pigeon in still air = 21 miles/hr
The speed of air = 3 miles/hr
Answer:
2 and 13
Step-by-step explanation:
We can use systems of equations here to find both the numbers. Let's assume one of the numbers is and the other is
.
We know that these numbers add up to 15, so .
We also know that one of these numbers is 7 more than 3 times the other, so .
We can now substitute the equation into
.
Combine like terms:
Subtract 7 from both sides:
Divide both sides by 4:
.
Now that we know the value of , we can substitute it inside an equation to find
. Let's substitute it inside
.
So the two numbers are 2 and 13.
Hope this helped!