Answer:
11
Step-by-step explanation:
Answer:
x = 10
Step-by-step explanation:
For the lines to be parallel, the two angles must have the same measure:
80 - x = 90 - 2x
x = 10 . . . . . . . . . add 2x-80
The value of x must be 10 to make the lines parallel.
16 x 10 x 12 = 1,920
The jewelry store received 1,920 rings
Hope this helps. :)
Answer:

Step-by-step explanation:
we know that
To find out the mean change of altitude, divide the total change by the amount of time it takes
so
---> is negative because the airplane is descending
Answer:
The vertex (h,k) is (-4,-7).
Step-by-step explanation:
I assume you are looking for the vertex
.
The vertex form of a quadratic is
where the vertex is (h,k) and a tells us if the parabola is open down (if a<0) or up (if a>0). a also tells us if it is stretched or compressed.
Anyways if you compare
to
, you should see that
.
So the vertex (h,k) is (-4,-7).