X= 2 ; you can use the fórmula for axis of symmetry , which is -b/2(a)
Answer:
160
Step-by-step explanation:
60% of a + 24 = 3a/4
=> 60a/100 + 24 = 3a/4
=> 3a/5 + 24 = 3a/4
=> 3a / 4 - 3a/5 = 24
=> ( 15a - 12a) / 20 = 24
=> 3a / 20 = 24
=> a = 24 × 20 / 3
=> a = 8 × 20
=> a = 160
Answer:
A non-calculus solution follows afterward.
For a calculus solution, the gradient is the first derivative with the point put in.
y = -x²+3x
dy/dx or y’ = -2x +3 is the gradient at any point.
but the tangent is at x = 2 so put it in
y’ = -(2*2)+3 = -1 is the gradient of the tangent at point (2,2)
Non-calculus solution:
y = -x²+3x 1️⃣but slope of tangent m = (y-2)/(x-2)2️⃣
put 1️⃣ into 2️⃣ and rearrange ⟹ mx-2m+x²-3x+2 = 0
or x²+(m-3)x+2–2m =0
but for a tangent the discriminant b²-ac = 0
(m-3)²-4*1*(2–2m) = 0
m²+2m+1 = 0
(m+1)(m+1) = 0
m = -1 is the is the gradient of the tangent at point (2,2)
Step-by-step explanation:
tiene que sacar la raiz nena
Answer:
Step-by-step explanation:
*There is an acute isosceles (don't know if I am spelling any of these correct)
*Right Scalene
*right isosceles
*equilateral
Those are some of the ones that I found