Yes this is true. For every problem-solving activity it's crucial that no less than five alternatives be considered.
Answer: 2(−x+y=−2)
2(−x+y=−2)
1(2x−3y=4)
Becomes:
−2x+2y=−4
2x−3y=4
Add these equations to eliminate x:
−y=0
Then solve−y=0for y:
−y=0
−y/-1 = 0/-1 (Divide both sides by -1)
y=0
Step-by-step explanation:
Now that we've found y let's plug it back in to solve for x.
Write down an original equation:
−x+y=−2
Substitute 0 for y in −x+y=−2:
−x+0=−2
−x=−2(Simplify both sides of the equation)
−x/-1 = -2/-2 (Divide both sides by -1)
x=2
Answer:
x=2 and y=0
Answer:
It will take 3.6 hours to wax a car if they work together.
Step-by-step explanation:
Calvin one hour work = 
Alvin one hour work = 
To find out how much they can do together per hour,
We have to add
and 
= 
=
--------------(1)
They can do
of the job per hour.
If "t" is the time taken to finish the job together, then one hour work
------------------------(2)
Now we have to find the value of "t" by setting the expression (1) and (2) equal.

It can solve by flipping the equation;

t = 3.6 hours
It will take 3.6 hours to wax a car if they work together.
Answer:
6
Step-by-step explanation:
30 ÷ 5 = 6
Only 2 times. After that, there's only enough room in there for 21 more.
These facts all come about as a result of DIVISION. Divide 79 by 29 and you'll see.