Answer:
x = ---------- = 1
Step-by-step explanation:
The formula for the axis of symmetry is x = -b/(2a). In this case b = -4 and a = 2, and so the axis of symmetry is
-(-4)
x = ---------- = 1
2(2)
P = 2l + 2w |subtract 2w from both sides
2l = P - 2w |divide both sides by 2
l = (P - 2w)/2
Answer:
40°
Step-by-step explanation:
Because triangle QSR is isosceles ∠SQR=∠SRQ=35°. The sum of the angles in a triangle is 180°, so ∠QSR=180°-35°-35°=110°. The measure of a straight line is 180°, so ∠PSQ=180°-110°=70°. Because triangle PSQ is also isosceles ∠PSQ=∠PQS=70°. Then, ∠QPS=180°-70°-70°=40°.