Can someone please help
1 answer:
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Answer:
Domain of C={1,2,3,4,5,6}
Range of C={24,28,32,36,40,44}
Step-by-step explanation:
We are given that Jenna knits scarves and sells them on Etsy an online market place.
Where C=Represents the cost in dollars
x=Number of scarves produced.
We have to find the domain and range of C.
Substitute x=1
$24
Substitute x=2
$28
$32
$36
$40
$44
Therefore, Domain of C={1,2,3,4,5,6}
Range of C={24,28,32,36,40,44}
<h3>Answer:</h3>
(5, -2, -3)
<h3>Explanation:</h3>We assume your equations are ...
- x +3y -z = 2
- 4x +2y +5z = 1
- 3x +0y +z = 12
These have solution (x, y, z) = (5, -2, -3).
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<em>How we know</em>
Trying the choices in the last equation eliminates the first and last. Trying the second choice in the first equation eliminates it, leaving the 3rd choice as the answer you're looking for.
We also know because we can ask a graphing calculator to solve the matrix equation (or row-reduce the augmented matrix).
<em>Comment on this problem</em>
The hardest part of this problem is figuring your intent. The equations are not well-separated, so we have a hard time telling what is a constant and what is a coefficient. It took a couple of guesses to sort it out. A little editing before posting would be helpful.