If 2x+y=5, then y=5-2x, so she substituted correctly.
x+4x=5x, so she combined like terms correctly.
She didn't subtract 10 from both sides, she added 10 to both sides.
Check the solution:

The answer is: She made no mistake.
80 cents Because $1.89 minus $1.09 equals 80 cents
Answer:
<h2><u>x = 21</u></h2>
Explanation:
x =
= <u>21</u> degree will be the answer.
{The sum of angle of opposite circumscribed quadrilateral in circle is 180°}
Answer:
Step-by-step explanation:
<u>This is the proportional relationship:</u>
<u>We have x = 3, y = 24, then k is:</u>
<u>The table will look as:</u>
- x = 1 ⇒ y = 1*8 = 8
- x = 2 ⇒ y = 2*8 = 16
- x = 5 ⇒ y = 5*8 = 40
Correct choice is C
Answer:
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