Answer:
Step-by-step explanation:
The formula of a surface area of a cube:
The formula of a volume of a cube:
We have
Calculate the edge length (<em>a</em>).
<em>divide both sides by 6</em>
Calculate the volume of a cube:
2/3* 3 is 2 so the answer is x=2
Alright so basically what you have to do here is realize that 130 miles is 2 hours, so if you divide by 2, you’ll have 65 miles in one hour ,, so 6mph, and if you divide again by two, you have 32.5 miles ,, therefore he travels 32.5 miles in 30 minutes
1. 1/4(x+3)=12=X+3-12*4/4=X-45/4. Then, x-45/4=0. So, 1. X=45. 2. x+4/3=12=3x-32/3*3=0*3. 3x-32=0. You add 32 to each sides. 3x=32. x=32/3. Therefore, 1. x=45 and 2. x=32/3
B is the valid use of the associative property of addition
