Answer:
12.5
Step-by-step explanation:
30-60-90 triangles always have the height be sqrt3 the base.
To take 16.5 units from zero to the right on a number line.
Answer:132
Step-by-step explanation:
Answer:
x = 5
Step-by-step explanation:
Given
x =
( square both sides )
x² = 3x + 10 ( subtract 3x + 10 from both sides )
x² - 3x - 10 = 0 ← in standard form
(x - 5)(x + 2) = 0 ← in factored form
Equate each factor to zero and solve for x
x - 5 = 0 ⇒ x = 5
x + 2 = 0 ⇒ x = - 2
As a check
Substitute these values into the equation and if both sides are equal then they are solutions.
x = 5
right side =
=
= 5 = left side ← solution
x = - 2
right side =
=
= 2 ≠ - 2 ← not a solution
Thus x = 5 is the solution to the equation