19. LANDSCAPING Rashard is building a rectangular patio. If t2 + 19t + 84
4t - 4
represents
22-2
the length of the patio and
represents the width, write and simplify an
t2 + 9 + 14
expression that represents the area of the patio.
Lesson 9-1 . Multiplying and Dividing Rational Expressions 4

Step-by-step explanation:

This is not very clear but I will try I guess..

+ 9 + 14

= + 13

I don't even know this question is all over the place.. try making a new one that makes sense.. :(

21

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.