Let w be the width.
2(2w) + 2w = 54.
4w+2w = 54
6w=54.
w=9
So length equals twice that...I think you can solve that on your own. xD
Answer: 14
Step-by-step explanation:
Step 1: Substitute the x and y values:

Step 2: Find 4 to the power of 3.
4 x 4 x 4 = 64
Now find 2 to the power of 3
2 x 2 x 2 = 8
Step 3: Subtract the two values as mentioned in the equation:
64 - 8 = 56
Step 4: Now divide 56 by 4 as mentioned in the equation.
56 ÷ 4 = 14
And... 14 is the answer!
Hope this helps :)
-jp524
Answer:
20
Step-by-step explanation:
Answer:
17) 750/9 and 18) 364
Step-by-step explanation:
17. Summation of 75*(0.1)^i from i=0 to infinity, that is equal to 75*(Summation of (0.1)^i). Summation of (0.1)^I is a geometric series with a sum of 1/(0.9)=10/9. Hence the series have a sum equal to 75*(10/9)=750/9
18) It's a series with sum=1+3+9+27+81+243=364