Answer:
90
Step-by-step explanation:
Answer:
Step-by-step explanation:
In system B, the first equation is the same, so clearly the <em>second</em> equation has been replaced. The only other equation in the system is the <em>first</em>, so that is the one that is multiplied by some number.
The number it is multiplied by must make the y coefficient be the opposite of the y-coefficient in the second equation, so they cancel when added. That is, the multiplier times -1 must be -4, so the multiplier must be <em>4</em>.
The purpose of doing this is to ensure the solution of System B <em>is exactly</em> the same as that of System A.
Answer:
43. <u>(2) $2.00</u>
Step-by-step explanation:
<u>Question 43</u>
- Let cheese pizza be c and mushroom pizza be m
- 3c + 4m = 12.50
- 3c + 2m = 8.50
Subtract Equation 2 from Equation 1.
- 3c + 4m - 3c - 2m = 12.50 - 8.50
- 2m = 4.00
- m = $2.00
- <u>(2) $2.00</u>
Answer:
25 minutes
Step-by-step explanation:
Worker1 is filling up at a rate of 11 per minute while worker2 is filling up at a rate of 11+1 per minute. Since worker1 has 25 extra barrels and since worker2 makes one extra barrel per minute it will take exactly 25 minutes to match worker1's barrel count.