Answer:
192
Step-by-step explanation:
Well if the first rectangle is 72 and 56, then we can find the area of that by multiplying length times width which would be 4032, so that would be the area of the second one. then we divide 4032 by 21, which is 192.
P.S, This is my first question answered, so if im wrong please let me know, thank you!
Answer:
E) 70
Step-by-step explanation:
Using combination factorial
a triangle has three vertices and a quadrilateral has 4 vertices
The number of triangles and quadrilaterals = ⁷C₃ + ⁷C₄ = 
= 70
Given that the length should be 3ft longer than twice the width, the equation that will be used to get the width will be as follows;
let the width be w;
the length will be:
(2w+3)
hence the area will be:
w(2w+3)=90
2w^2+3w-90=0
thus the above equation can be used to find the value of w
Use the Pythagorean theorem.
x^2 + 5^2 = 13^2
x^2 + 25 = 169
x^2 = 144
x = 12
There are two possibilities.
'Q' could be at +20, or it could be at -6 .
