The vertex of this parabola is at (-2, -3) when the y value is -5 and the x value is -1 what is the coefficient of the squared expression

a = - 2

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

here (h , k) = (- 2, - 3), hence

y = a(x + 2)² - 3

To find a substitute x = - 1, y = - 5 into the equation

- 5 = a - 3 ⇒ a = - 5 + 3 = - 2

The coefficient of the squared expression is - 2

c. 65°

step-by-step explanation:

we are given a triangle with two known angles, 62° and 53°, while the third angle x is unknown and we are to find its value.

we know that the sum of angles in a triangle is equal to a total of 180 degrees. so we can write it as:

x + 62° + 53° = 180°

solving to find the value of x:

x = 180 - (62 + 53) = 65°

therefore, the value of x in this triangle is 65°.

step-by-step explanation: