Y= ax² -4x +3
-b/2a is x - coordinate of the vertex,
line of symmetry x=-2, x=-2 is a coordinate of the vertex also, because the line symmetry has vertex.
x= -b/2a
x= -2, b= -4
-2=-(-4)/2a
-2=4/2a
-2=2/a
a=2/(-2)=-1
a= - 1
6 divided by 4(3/5)
After multiplying the fraction we get 23/5
Dividing a fraction will result to multiplying
6 * 23/5
138/5 is the answer.
Answer:
rotating ΔEAR 180° inside the right angle parallelogram circumscribed by.
original coordinates:
A (-6, 4)
R (-2, 2)
E (-5, -6)
post rotation coordinates:
- A (-2, -6)
- R (-6, -4)
- E (-3, 4)
Answer:
15
Step-by-step explanation:
Call the unknown time x.
The mean is the sum of the numbers divided by the number of numbers.
There are 5 numbers.
(8 + 10 + 38 + x + 20)/5 = 18.2
(x + 76)/5 = 18.2
x + 76 = 91
x = 15
