Answer:
x = -7
Step-by-step explanation:
f(x) = -3x + 2
= -3(3) + 2
= -9 + 2
= -7
Solution:
we have input x= 3
and function f(x)= -3x+2
putting x=3 into f(x), we have,
f(3)= (-3)(3)+2
= -9+2
we can show input x and output f(x) as ordered pair, and it is given by.
let there be a set of input given by-
I= {3}
and for output-
O= {-7}
for ordered pair we will find I×O, that is now,
{(3,-7)}
which is not same as O×I
Hence, ordered pair is {(3,-7)}
x=-1
The axis of symmetry is along the vertex
The vertex is at (-1,-2)
The x coordinate is -1
length of the guy wire: 49.056
here are the steps
78
∠A + ∠B + ∠C = 180 { Angle sum property of triangle}
42 + ∠B + 60 = 180
∠B + 102 = 180
∠B = 180 - 102 = 78
In similar triangles, corresponding angles are congruent.
∠S ≅ ∠B
∠S = 78°
