Answer:
The vertex is (0, 0).
Step-by-step explanation:
Check out the parent function: y = x^2. The graph is a parabola whose vertex is (0, 0) and which opens upward.
Then y = -x^2 is the same but opens downward. The vertex is (0, 0).
-4/5=2b
since b is alrteady in the subject of the equation simply divide both side of the equation by the coefficient of b
:. (-4/5)/2= 2b/2
-4/10=b
:. b=-2/10 or -0.4
A) midpoint would be (-20+35)/2, (15-12)/2
= (15/2, 3/2)
B) Distance = sqrt((35--20)^2 +(-12-15)^2) = sqrt(3754) = 61.27 units
Might be late but since the area is a squared unit (m^2), it's 2-dimensional perimeter is just a plain unit(m), it's 1-dimensional the 2-dimensional ratio is 112/63 Then, the 1-dimensional ratio is sqrt(112/63), which is 4/3. Plus i just took the quiz and got that question right :)
Answer:
Step-by-step explanation:
Factorise numerator and denominator
x² - 9 ← is a difference of squares and factors in general as
a² - b² = (a - b)(a + b) , then
x² - 9
= x² - 3² = (x - 3)(x + 3)
x² - 3x ← factor out x from each term
= x(x - 3)
Then
= 
← cancel common factor (x - 3) on numerator/denominator
=
