The equation of a circle with center (h,k) and radius r is given as:
From the question, it is given that the center of the circle is (-7,-4) and the diameter is 8.
Since the radius is half the diameter, it follows that the radius is:
So it implies that r=4, h=-7, and k=-4.
Substitute these values into the equation of a circle:
Hence, the equation of the circle is:
Answer:
Step-by-step explanation:
Let the unknown number be n.
Then 7/n = 3n - 10.
Alternatively, 7 = 3n^2 - 10n.
Answer:
15 cm in one minute.
Step-by-step explanation:
If the ant travels at 30 cm every two minutes, then divide both numbers by two to get the unit rate, which is 15 I'm per minute.
I graphed the problem and I got this. I hope this helps
36 sundaes were sold.
To show that this is correct, first subtract 8 from 36, to get 28. 28 is equal to the number of banana splits sold. Next, multiply 36 by 2, to get $72. Then, multiply 28 and 3 to get $84. Finally, add $72 and $84 to get $156. Thus proving that 36 sundaes were sold.
I hope this helps!