Which of the following equations is of a parabola with a vertex at (0,3)?
y= (x - 3)2
y= (x + 3) 2
y=x2-3
y= x2 + 3

Step-by-step explanation:

we know that

The equation of a vertical parabola in vertex form is equal to

where

(h,k) is the vertex

In this problem we have the vertex at point (0,3)

substitute

therefore

The option is the answer

In this case the coefficient a is equal to 1

x = 10.1

step-by-step explanation:

all of the angles of a tirangle add up to 180º

180 - 65 = 115 (since we already know the value of one angle)

(2x + 7) + (8x + 7) = 115

(combins like terms) 10x + 14 = 115

(isolate the variable subtract 14 from both sides): 10x = 101

(find the variable divide both sides by 10): x = 101/10

x = 10.1

yeet

step-by-step explanation: