Answer:
721/10
Step-by-step explanation:
Shift the decimal place over one for the numerator and the denominator
A) x < -12
sorry can't do b
Answer:
12 toys
Explanation:
Rita put away 12 toys because she put away all of the toy dogs (6) and all of the toy cats (6). 6 + 6 = 12. So, she put away a total of 12 toys.
Answer:
either of Step 3 or Step 4
Step-by-step explanation:
At Step 3, -1 is added to both sides of the equation. Technically, this is correct (not an error), but it does not lead to a solution to the equation (so, could be considered to be an error). Adding +1 to both sides of the equation would lead more directly to a solution.
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At Step 4, x -1 -1 is simplified to x. This is an error, as the correct simplification is x-2, so the equation after this step should read x-2 = 5. If Step 3 had been executed by adding +1 to both sides of the equation, then the simplification here would be x=7.
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Answering "why" someone does something is always tricky. One can project one's own interpretation onto the actions of others, but one never really knows whether that is accurate or not.
The "why" in this case could go back to the motivation of the problem's author, which may be to see if the student can recognize that the opposite of -1 is +1, or that the sum -1-1 is not zero.
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My guess is that Step 3 is considered to be the erroneous step, and that choosing Step 4 will get you into a losing argument with your grader.
Answer:
yes each input (time in hours) has a unique output(cost)
Step-by-step explanation:
I did the test
