Answer:
Step-by-step explanation:
7x+9
5x+2x= 7x
5+4=9
7x + 9 is the result when combining like terms.
Answer:
8 grams
Step-by-step explanation:
The balance is in equilibrium, so the weights of the two sides are equal.
Let the weight of a square be s.
Left side: 2s + 4
Right side: s + 3(4) = s + 12
The weights are equal, so we set the two expressions equal.
2s + 4 = s + 12
s = 8
Answer: The weight of a square is 8 grams.
Question 2: The first step was the combine the like terms; in this example he is subtracting the 3x on both sides of the =.
F(x<40)= 0.39+(x*0.24) This formula will quantify what you have written out above.
