Hi,
The answer is c. The sample is biased.
This is because the sample is taken on a single state, an Rebecca reports a statistic about the nation. Her data contains information only of her state. If she lives in a very cold state, there is probably more homeowners using electric heat than in a hot state.
Point H -3 1/2 should be the answer
Answer:
The standard form of the equation is

Step-by-step explanation:
The given circle has equation:

We regroup similar terms to obtain:

We now complete the square to obtain:


Or

This is now of the form:

which is referred to as the standard form equation of the circle:
Answer:
i'm not too good in this, but i believe the answer is -3
Step-by-step explanation:
the hcf, highest common factor, of both -3 and -15 is -3, hence making the answer -3? if this is incorrect, i apologize.