Answer:

Step-by-step explanation:
Pythagorean Theorem
QS^2+SR^2=QR^2
10^2+10^2=QR^2
100+100=QR^2
200=QR^2


Answer:25
The work is shown in the picture below.
Hope it helps :)
Answer:
y=5x^2+30x+58
y=−x^2+8x−26
Step-by-step explanation:
Vertex form is y = a(x – h)^2 + k, where (h, k) is the vertex.
Standard for is Ax + By = C
simply rewrite the equations using the formulas
Answer:
9°
Step-by-step explanation:
In a ∆, equal sides make equal angle to the third side. So the angle that's not mentioned is same '2'.
Sum of angles in a ∆ = 180°
80° + m/_2 + m/_2 = 180°
80° + (5x + 5) + (5x + 5) = 180°
10x + 90° = 180°
10x = 90°
x = 9°