Answer:
x=-1 y=1/2
Step-by-step explanation:
do you need the step by step?
Answer:
15
Step-by-step explanation:
Co-efficient = number multiplied by a variable
The only number multiplied by a variable is 15, therefore, it's the co-efficient.
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Hence the correct answer is C) -23
Further explanation:
We have to put the values of m and n into both expression first separately and then multiply the answers.
Given expressions are:
![Exp\ 1:3m-4n\\Exp\ 2: n^2-m](https://tex.z-dn.net/?f=Exp%5C%201%3A3m-4n%5C%5CExp%5C%202%3A%20n%5E2-m)
The values are:
![m=5\\n=-2](https://tex.z-dn.net/?f=m%3D5%5C%5Cn%3D-2)
Putting the values in expression 1:
![3m-4n\\=3(5)-4(-2)\\=15+8\\=23](https://tex.z-dn.net/?f=3m-4n%5C%5C%3D3%285%29-4%28-2%29%5C%5C%3D15%2B8%5C%5C%3D23)
Putting the values of m and n in second expression
![n^2-m\\=(-2)^2-5\\=4-5\\=-1](https://tex.z-dn.net/?f=n%5E2-m%5C%5C%3D%28-2%29%5E2-5%5C%5C%3D4-5%5C%5C%3D-1)
Multiplying both expressions:
![(3m-4n)(n^2-m)=23* (-1)=-23](https://tex.z-dn.net/?f=%283m-4n%29%28n%5E2-m%29%3D23%2A%20%28-1%29%3D-23)
Hence the correct answer is C) -23
Keywords: Polynomials, Putting values in expressions
Learn more about polynomials at:
#LearnwithBrainly
Answer:
the answer is option D. 25 units. I hope that you'd understand
Answer:
46
Step-by-step explanation:
180 minus 105 minus 29