2.07 hours x 60 minutes
----------------
1 hour
124.2 minutes x 60 seconds
----------------
1 minutes
7452 seconds
Answer: x= -1, y= -3
Step-by-step explanation
solve like a system of equations
x-y-2 = 0
+
x+y+4=0
------------
2x+2=0, 2x= -2, x= -1, then plug that back into either equation
-1+y+4=0, y+3=0, y= -3
Answer:
The conversion of minutes to seconds is skipped in multiple-step conversion.
Step-by-step explanation:
Given:
To convert 18 hours into seconds.
Now, to get the conversion ratio skip in this multiple-step conversion.
First we need to convert hours into minutes:
1 hour = 60 minutes.
So, 18 hours = 
=
.
Then, we convert minutes into seconds:
1 minute = 60 seconds.
So, 1080 minutes = 
=
.
Thus, 18 hours = 64800 seconds.
<u>As given in question the conversion from hours to seconds is there but the conversion of minutes to second is not there it is skipped so the result is incorrect.</u>
Therefore, the conversion of minutes to seconds is skipped in multiple-step conversion.
Substitution is the way I would solve it
Answer:
9x + 4.5y if .5y is a decimal point, 9x + 9y if the dot is a typo
Step-by-step explanation:
If the dot is real,
7x + 3x + 4y - x + 0.5y
10x + 4y - x + 0.5y
10x - x + 4y + 0.5y
9x + 4.5y
If the dot is a typo,
7x + 3y + 4x - x + 5y
10x + 4y - x + 5y
10x - x + 4y + 5y
9x + 9y