2a + b = 9.4
There are 3 parts, 2 go to Rod A, 1 go to Rod B.
9.4 / 3 = 3.13333 recurring
Rod A = 2(3.13)
= 6.26
Rod B =
3.13
Rounding, Rod A = 6.3 , Rod B = 3.1
Answer:
a=c because opposite vertices are always equal to one another
Step-by-step explanation:
Answer:
- first rectangle: 18 by 9
- second rectangle 21 by 6
- x = 9
Step-by-step explanation:
The perimeter in each case is double the sum of the side dimensions. Since the perimeters are equal, the sum of side dimensions will be equal:
2x +x = (x +12) +(x -3)
3x = 2x +9 . . . . . . . . collect terms
x = 9 . . . . . . . . . . . . . subtract 2x
Given this value of x, the dimensions of the first rectangle are ...
{2x, x} = {2·9, 9} = {18, 9}
And the dimensions of the second rectangle are ...
{x+12, x-3} = {9+12, 9-3} = {21, 6}
