9514 1404 393
Answer:
A(w) = w(3w-2)
A(2) = 8 . . . . square feet
Step-by-step explanation:
For width w, the length will be 3w-2, two feet less than 3 times the width. The area is the product of length and width, so is ...
A = WL
A(w) = w(3w-2)
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To find the area for a width of 2, we put 2 where w is, then evaluate.
A(2) = 2(3·2 -2) = 8 . . . . square feet
The percentage decrease was 13%. If you subtract 1,300,000 from 1,500,000, you will get 200,000. You then divide 200,000 by the original number 1500,000 and you will get 0.13333333333333...
After you do that multiply that number by 100 and you will get your percentage.
(1,500,000-1,300,000=200,000)
(1,500,000/200,000=0.13333333333...)
(0.1333333333333X100=13.33333333...)
and then just round
Ordered pairs are (x,y). The plugin of (7, -39) works because -39 +4 equals -35. Dividing this by -5 equals 7 (x).
The key to solving this problem is drawing a rectangle outside the figure and subtracting the reas of the triangles formed from the are of the rectangle. You can look at the attched image if you want a visual.So first let's find the area of the rectangle, the length is 11 and the width is 5 so the area is 55. Now let's find the area of the trinagles. Triangle 1 has sides of 4 and 3 so the area is 6. Triangle 2 has sides of 5 and 5 so the area is 25/2. Triangle 3 has sides of 2 and 5 so the area is 5. Now let's add the area of the triangles up to get 47/2. Now let's subtract 47/2 from 55 to get the area of the figure which is *drumroll*...63/2. that's all.
If you multiple 13 18=234 then subtract that by 13 18 203 that would be the area so 13 is less than 18