Answer:
16
Step-by-step explanation:
2x2-y
2(3)2-2
2(9)-2
18-2
16
Answer: She needed 144 square feet of carpet.
Step-by-step explanation:
Given : Maria is buying new carpet. Her bedroom is in the shape of a square.
The length of each side is 12 feet.
We know that the area of square =
So , the area of the bedroom = [which is an exponential expression]
Simplify it
The area of the bedroom =
Also, the carpet she needed = Area of the bedroom.
Thus , She needed 144 square feet of carpet.
306,34=8.50*x+75 |-75
231,34=8,50*x. |:8,50
27,22=x
Tabhita has to work 28 hours to be solvent for the tablet.
*She wants to save money to buy a tablet...*
A geometric series is written as , where is the first term of the series and is the common ratio.
In other words, to compute the next term in the series you have to multiply the previous one by .
Since we know that the first time is 6 (but we don't know the common ratio), the first terms are
.
Let's use the other information, since the last term is , we know that , otherwise the terms would be bigger and bigger.
The information about the sum tells us that
We have a formula to compute the sum of the powers of a certain variable, namely
So, the equation becomes
The only integer solution to this expression is .
If you want to check the result, we have
and the last term is
8^2 (8^3)^2/8^5
8^2x8^6/8^5
8^8/8^5
8^8-5
8^3
Answer: 512