Find the missing length, when the perimeter is 9x+11.
They give me 2 lengths:
2x+3 and 3x+1 how could I find the missing length x?
would I add 2x+3+3x+1? and then subtract the total by 9x+11?
Is your figure a triangle?
Are the three sides 2x+3, 3x+1, and x ??
If so, then
2x+3 + 3x+1 + x = 9x+11
6x - 9x = 11 - 4
x = -7/3 ..... makes no sense
OK, try something different.
let the third side be y
then 2x+3 + 3x+1 + y = 9x+11
y = 9x-5x+11-4
y = 4x+7
ohh, ok, thank you so much :)
find the missing legth of x
provided number
15cm
9cm and x
To find the missing length, you need to set up an equation using the given lengths and the perimeter. The perimeter of a shape is the sum of all its sides.
In this case, you are given two lengths: 2x + 3 and 3x + 1. To find the missing length, let's call it "m."
The equation for the perimeter is:
Perimeter = Sum of all sides
So, for this problem, the perimeter is given as 9x + 11. We also know that the sum of the three sides (2x + 3, 3x + 1, and m) should equal the perimeter.
Now, set up the equation:
(2x + 3) + (3x + 1) + m = 9x + 11
Simplify the equation by combining like terms:
5x + 4 + m = 9x + 11
Next, isolate the missing length term "m" on one side and the variable terms on the other side:
m = 9x + 11 - (5x + 4)
m = 9x + 11 - 5x - 4
m = 4x + 7
So, the missing length is 4x + 7.