Hello friend!
1/3(9x+12)=15
We move all terms to the left:
1/3(9x+12)-(15)=0
Domain of the equation: 3(9x+12)!=0
x∈R
We multiply all the terms by the denominator
-15*3(9x+12)+1=0
multiply elements
-45x(9+1=0
Answer:
Step-by-step explanation:
.4s-500=.3s-300
.1s=200
s=$2000
Answer:
x = 25
Step-by-step explanation:
Mathematically, one of the properties of a parallelogram is that consecutive angles of a parallelogram are supplementary
What this means is that they add up to be 180
A and B are supplementary, and this means that their addition equals 180
Thus, adding A and B equals 180
2x -10 + 5x + 15 = 180
7x + 5= 180
7x = 180-5
7x = 175
x = 175/7
x = 25
Denise's rock = 684 g
Pauline's rock = 29510 cg = 295.1g
684 - 295.1 = 388.9g
Denise's sample is 388.9g heavier than Pauline's