Answer:
22.1875 (23 full days)
Step-by-step explanation:
142 * 2 = 284
284 / 6.4 = 44.375
44.375 / 2 = 22.1875
23 full days to get the rate to double
i hope i did this correctly
1.5x=3
First you want to get x by itself so divide both sides by 1.5
3/1.5=2
x=2
Well it would be 63$ if we are not including tax because 80-17=63
Answer:
This is a reflection about the x-axis.
Step-by-step explanation:
A reflection about the x-axis has the rule
[x,y]-> [x,-y].
Therefore
M[x,y] = [x,-y}
Let M=
|a b|
|c d|
Then the matrix multiplication gives
ax+by=x.............(1)
cx+dy=-y............(2)
Solving the previous equations (1) and (2) gives
a=1, b=0
c=0, d=-1
giving M as
|1 0|
|0 -1|