Maria is making a frame for a rectangular garden. She uses a string to meas Jength of the diagonal.
Garden
(width)
String (diagonal)
Garden (length)
Which equation should Maria use to ensure that the frame has 90° angles?
A.
length + width = diagonal
B.
width + diagonal = length
C.
length? + width?
diagonala
length
D.
width? + diagonal

details

step-by-step explanation:

system of linear equation

step-by-step explanation:

as given in the data

a= 20 , b= -12

let us suppose that it is a straight line equation

now we know the formula for the system of linear equation

b= ma + c )

here m is slope of a straight line which is equal to formula

m=   (ii)

and here c is a constant

now putting the value of a and b in equation (ii)

m=

m=

putting the value of a,b and m in equation (i) gives us

-12 = + c

-12=-12 + c

adding 12 to both sides

-12 +12 = -12 +12 +c

0 =c

or c=0

as the value of the constant is zero which gives us that it is a linear equation and this order pair satisfies the system of linear equations.

first the equation needs to be simplified. so the equation would now look like:   52-24+11

then you multiply.

and when you multiply, you will get the answer of 39.