A building has an entry the shape of a parabolic arch 84 ft high and 42 ft wide at the base, as shown below. Find an equation for the parabola if the vertex is put at the origin of the coordinate system.

i would say true? if the unit was informational and it "refreshed your understanding", then true.

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.

110

step-by-step explanation:

based on the question i am guessing that it is a typo for abc