Let w represent the width of the rectangle in cm. Then its length in cm is (3w+9). The perimeter is the sum of two lengths and two widths, so is ...
... 418 = 2(w + (3w+9))
... 209 = 4w +9 . . . . . . divide by 2, collect terms
... 200 = 4w . . . . . . . . subtract 9
... 50 = w . . . . . . . . . . divide by 4
... length = 3w+9 = 3·50 +9 = 159
The dimensions of this piece of land are 159 cm by 50 cm.
Answer
1) x = 8
2) x = 1/3y + -5/3z
3) x = -1/2y + -3/4z + -1/2
Hope this helps:))
Answer:
7q + 12
Step-by-step explanation:
simply arrange the given expressions into the traditional way of adding numbers like 1 + 1 but vertically like : 1
1 +
which is equivalent to
6q + 1 +
q + 11
______
7q + 12
why? because 6q plus q is equal to 7q and 1 + 11 is equal to 12
good day.
