Marie has a rectangular board 12 inches by 16 inches around which she wants to put a uniform border of sherlls. if she has enoug h shells for a border whose area is 128 determine the width of the border
1 answer:
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
You might be interested in
1. 30x-2=1x+1 28x=2x 14=x
Answer:
six years of the school and I have a lot to do you and your wife and your kids will love it too much for your life as a family that you have been in love and I hope that I am able and not murdaworth into it for a long while now I am going back and I have been thinking of you ❤ ♥
Great work! But please show more of the picture
If you take 3.5 and divide it by 0.05, or times 20, that would make it 70.
Answer:
<h2>
<em><u>-120</u></em> </h2>
Step-by-step explanation:
4(-5)(-2)(-3)
= -20 × 6
= <em><u>-120 (Ans)</u></em>