X + y - z = 9
3x - y + z = -13
____________(+)___
4x = -4 => x = -1 => y - z = 10;
But, x - 2y + 4z = -1 => -2y + 4z = 0 => -y + 2z = 0;
y - z = 10
-y + 2z = 0
_________(+)__
/ z = 10 => y = 20 .
A. There is one solution. The solution is ( - 1, 20, 10 ).
Answer: 3y is the coefficient.
Step-by-step explanation: A coefficient is numerical or constant quantity placed before and multiplying the variable in an algebraic expression. Or, to put it simpler, a coefficient is a number with an variable next to it.
Answer:710.375
Step-by-step explanation:
Answer:
What kind of energy transformation is occurring?
How much water was melted by the incandescent light bulb? By the CFL?
How do you explain the difference in the amount of water?
Which light bulb do you think is more energy efficient?
Research incandescent bulbs and CFLs. Write a 150 word summary describing how each bulb works and include the answers to the questions above.
this is not a question you need to write a 150 word essay
20 points DO NOT PUT THE QUESTION IN THE ANSWER BOX IF YOU DON'T KNOW DON'T ANSWER AND WAST MY POINTS I NEED HELP PLEASE WITH THE QUESTION
Step-by-step explanation:
