A. They are symmetric about y=x
Answer:
what
Step-by-step explanation:
Answer:
The number is 72.
Step-by-step explanation:
Let the number be xy.
x = y + 5
10x + y - 2(10y + x) = 0.25(10x + y)
10x - 2x + y - 20y = 2.5x + 0.25y
5.5x - 19.25y = 0
Substituting for x:
5.5y + 27.5 - 19.25y = 0
-13.75y = -27.5
y = 2.
So x = 2 + 5 = 7.
Answer:
6) 8
7) 10
8)1/3
9)12 feet
Step-by-step explanation:
For questions 6,7,8...,just use the calculator
9)Since all sides of a square are equal
Let one side of the square be (z)
; Area of a square = side × side
; 144 = z × z
; 144 = z^2
Hence one side of the square is....,
square root of (144)...in which you can just use a calculator
; Side length = 12 feet
Answer:
<h2>QR = 15</h2>
Step-by-step explanation:
If PQRS is parallelogram, then SP = RQ. Therefore we have the equation:
5z + 3 = 6z - 3 <em>subtract 3 from both sides</em>
5z = 6z - 3 <em>subtract 6z from both sides</em>
-z = - 3 <em>change the signs</em>
z = 3
QR = 6z - 3
Put the value of z to the expression:
QR = 6(3) - 3 = 18 - 3 = 15
