Answer:
a and c
Step-by-step explanation:
The equation of a quadratic in vertex form is
f(x) = a (x - h)² + k
where (h, k ) are the coordinates of the vertex and a is a multiplier
f(x) = (x - 5)² + 7 ← is in vertex form
Thus the function is quadratic → a
• If a > 0 then the grapg will open upwards
• If a < 0 then the graph will open downwards
Here a = 1 > 0 then graph will open upwards → c
Answer:
Step-by-step explanation:
2. 3x-1/3 = 5
+1/3 +1/3
___________-
3x= 5 1/3
÷3 ÷3
__________________
x=1.77777777778
5. 3x-9=5x-3
+3 +3
_____________-
3x-6=5x
-3x -3x
_______________-
-6=2x
÷2 ÷2
______________-
-3=x
8. 3x-2x=8 ( I crossed multiplied btw)
x=8
Hope this helps ∞<3
Answer:
x>9
Step-by-step explanation:
Answer:
4(x-5)=4x-20
4x-20=4x-20
+<u>20 +20</u>
4x=4x
<u>-4x </u>-4x therefore there's infinite solutions
0=0
