Emma sells jewelry online. She has found that when she sells each piece of jewelry for $20, she sells an average of 23 pieces of
1 answer:
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Answer:
A, B and C
Step-by-step explanation:
In the equation: 3y=27x
Making y the subject of the equation, we have:
The constant of proportionality between y and x is 9.
We want to determine which relationships have the same constant of proportionality 9.
<u>Option A</u>
y=9x
The constant of proportionality is 9.
<u>Option B</u>
2y=18x
Divide both sides by 2 to obtain: y=9x
The constant of proportionality is 9.
<u>Option C</u>
x=3, y=1/3
Substitution into y=kx gives:
1/3=3k
k=9
The constant of proportionality is 9.
<u>Option D</u>
x=6, y=2/3
Substitution into y=kx gives:
2/3=6k
k=2/3*6=4
The constant of proportionality is 4.
<u>Option E</u>
When x=2, y=18
Substitution into y=kx gives:
18=2k
k=9
However, when x=4, y=27
Substitution into y=kx gives:
27=4k
k=6.75
This is not a proportional relation since the constant of proportionality is not equal.
The correct options are A, B and C
Hey there,
Pretend that 50 = 100
And that 5 = 10.
I did a 100 test unit test, and I got 10% wrong.
If you think about this, the answer would be 90%
So, it's the same in this case,
50 in half of 100
5 is half of 10.
So . . .
This would mean that your correct answer would be 90% because 5 in this case is to be considered to be 10.
Your correct answer is . . . .
Hope this helps
~Jurgen
Pretend that 50 = 100
And that 5 = 10.
I did a 100 test unit test, and I got 10% wrong.
If you think about this, the answer would be 90%
So, it's the same in this case,
50 in half of 100
5 is half of 10.
So . . .
This would mean that your correct answer would be 90% because 5 in this case is to be considered to be 10.
Your correct answer is . . . .
Hope this helps
~Jurgen