Answer:
The length of the rectangle is 25 km
Step-by-step explanation:
Let
x ----> the length of rectangle
y ----> the width of rectangle
we know that
The perimeter of rectangle is
we have
so
simplify
---- > equation A
---> equation B
substitute equation B in equation A and solve for y
Find the value of x
therefore
The length of the rectangle is 25 km
Answer:
More
Step-by-step explanation:
Because the absence of corners allows more space for more balls
What is the missing sign between 3 and 2? I assume that it's multiplication sign, or *
3*2=6 (twice three is 6, because 3+3=6)
so the result of 3*2x is 6x, because 2x is actually 2*x, so we have 3*2*x - we are allowed to simplify this!
and 6 is the coefficient: the number by which a variable is multiplied.
Call the length a, the width b
Perimeter = (a+b) x 2
We have : a - b = 4 and (a+b) x 2 = 56
-> a + b = 28
-> a - b = 4
=> a+b + (a-b) = 32
2a = 32
a = 16
b = 56:2-16 = 12
So, the length = 16 and the width = 12
