Answer: 56 mph
Step-by-step explanation:
48 miles x 2 hours = 96 miles
60 miles x 4 hours = 240 miles
240 + 96 = 360 total miles
360 / 6 (hours) = 56 mph
The slope is:(9-3)/(1-(-2))=6/3=2
Answer:
Your first instinct might be to go ahead and add the x terms together, BUT this would be a bad thing to do! You cannot combine the x2 and 2x, because the first term has an exponent (2) and the second one does not have an exponent; therefore, you cannot add them together!
Step-by-step explanation:
![(x-5)(x^2-x-4) =x^3-6x^2+x+20](https://tex.z-dn.net/?f=%28x-5%29%28x%5E2-x-4%29%20%3Dx%5E3-6x%5E2%2Bx%2B20)
Step-by-step explanation:
Given polynomials are:
![x^2-x-4\\and\\x-5](https://tex.z-dn.net/?f=x%5E2-x-4%5C%5Cand%5C%5Cx-5)
Both polynomials have to be multiplied. We will use distributive property for the said purpose
So,
![(x-5)(x^2-x-4)\\=x(x^2-x-4)-5(x^2-x-4)\\=x^3-x^2-4x-5x^2+5x+20](https://tex.z-dn.net/?f=%28x-5%29%28x%5E2-x-4%29%5C%5C%3Dx%28x%5E2-x-4%29-5%28x%5E2-x-4%29%5C%5C%3Dx%5E3-x%5E2-4x-5x%5E2%2B5x%2B20)
Combining alike terms
![=x^3-x^2-5x^2-4x+5x+20\\=x^3-6x^2+x+20](https://tex.z-dn.net/?f=%3Dx%5E3-x%5E2-5x%5E2-4x%2B5x%2B20%5C%5C%3Dx%5E3-6x%5E2%2Bx%2B20)
Hence,
![(x-5)(x^2-x-4) =x^3-6x^2+x+20](https://tex.z-dn.net/?f=%28x-5%29%28x%5E2-x-4%29%20%3Dx%5E3-6x%5E2%2Bx%2B20)
Keywords: Polynomials, Multiplication
Learn more about polynomials at:
#LearnwithBrainly
It would be 18.75 because if you put it into a mixed number then multiply by 5 you get 18.75