Answer:
First option
Step-by-step explanation:
Formula of perimeter =
Length + Length + Breadth + Breadth
So,
4x + 8 + 4x + 8 = 8x + 16
8x + 16 + 2x - 3 + 2x - 3 = 12x + 10
Answer:
The length of third side is: 6.3
Step-by-step explanation:
Given triangle is a right triangle where
Base = ?
Perpendicular = 5
Hypotenuse = 8
Let x be the base
As it is a right-angled triangle, Pythagoras theorem can be used to find the third side
Putting the known values
Taking square root on both sides
Rounding off to the nearest 10th
Base = 6.3
Hence,
The length of third side is: 6.3
You did not specify the brother's age, so I make a expression, <em>b</em> as the variable.
(3<em>b</em> + 5) - 11
Now do that with the brother age instead of the variable.
Let x be the distance between the two watchtowers
Answer: D.