7x^2 + -x + -2 + 6x^2 + - 3
6x^3 + 7x^2 – x – 5
Your answer is A: 6x^3 + 7x^2 – x – 5
Answer:
First number --> x
Second number --> y
x + y = 14 --> x = 14 - y
x - y = 4
so
14 - y - y = 4
14 - 2y = 4
2y = 10
y = 5
so
x = 14 -5
x = 9
Answer:
there are 15 boys in kelvin's class
Step-by-step explanation: