No solution
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12x-21y=-42 -----> /3 (divided by 3 )
4x-7y=14 ------ (2)
4x-7y=-2 ------- (1)
how 4x-7y =14 an = -2
and if we
(2)-(1)
0=12
#
1. distributive property
2. commutative property (the order of 8x and -24 is swapped)
3. reflexive property ((8-24) = -16; -16 is substituted for 8-24. I prefer "substitution property".)
4. commutative property (the order of 8x and -16 is swapped)
5. distributive property
Answer:
199.75km
Step-by-step explanation:
Step one:
given data
We are told that the time of travel is from
8:36- to 10:57
which is 2 hours 21 minutes
Hence the time taken is 2.35 hours
the speed is 85km/h
Step two:
From the expression
speed= distance/time
85= distance/2.35
distance= 85*2.35
distance= 199.75km
To find the inverse of any function, switch the x's with y's and vice versa.
The current equation given is 
Switch the 
with 
and switch the with
After doing so, we'll have the following equation:
Now, let's move the variables around so that y is isolated on the left side again.
Subtract both sides by 4y
Subtract both sides by x
Divide both sides by -4
That is the answer.
Have an awesome day!
(ﾉ◕ヮ◕)ﾉ*:･ﾟ✧
