Area of rectangular board = length (inches) x width (inches) = 12" x 16" = 192 in²
Area of the border is given as 128 in²
Adding the area of the board and the border gives (192 + 128)in² = 320 in²
Set this up as the algebraic equation (x + 12)(x + 16) = 320 and solve for x:
Remember to use the FOIL method, which is multiplying the terms in the order of first, outer, inner, last.
x² + 12x + 16x + 192 = 320
x² + 28x + 192 - 320 = 0
x² + 28x - 128 = 0
solve for the two x values:
(x + 32)(x - 4) = 0, and knowing we only need the positive x value
x = 4 or 4 inches is the width of the border
All you have to do is cancel the x 4/11
Answer:
2. A) 37 B)160 C) 110
The tens digit is 10,20,30,40,50,60,70,80,90. Two away to the left of a decimal point.
3. A)730 B) 675 C)1930
The hundreds digit is three from the left of a decimal point.
4. A) 0.40 B)74.60 C)15.20
The tenth is one away to the right of the decimal.
5. A)1.210 B) 3.430 C)0.350
The hundreth is two away to the right of the decimal point.
Explanation:
If it is above 5 you bring the digit before it up by one, if it is under 5 you bring the digit that is under 5 to zero.
Independent is the x dependent is the y
independent- time
dependent- total number of knee bends
