Answer:
5 $20 bills
15 $10 bills
Step-by-step explanation:
x+y=20
10x+20y=250
thats all I remember about substitution/elimination lol
Answer:
you have 3 more years to go
Step-by-step explanation:
Answer:
f(x)+g(x)=4x^3+x−7
Step-by-step explanation:
To find f(x) + g(x) add the expressions together by combining like terms. Recall like terms are terms with the same base and exponent.
f(x) + g(x) = x - 7 + 4x^3
f(x) + g(x) = 4x^3 + x -7
Answer:
C
Step-by-step explanation:
In this experiment, the scientist cools the gases. This means that she decreases the temperature of the gases.
Based on this, the changes in the temperature will be negative for this experiment to indicate that the gases are losing energy (heat energy).
