7(x + 1) = 21
7x + 7 = 21
7x = 14
x = 2
The diameter is 12 units long. Their equation could be seen in y = 1, because it is a horizontal line. From x = - 7 to x = 0 is 7 units. From x = 0 to x = 5, is 5 units. 5 + 7 = 12. This means the radius is 6. We will use this later. If you need another way to find the radius, let me know. I can just use distance formula.
We will use these endpoints to find the center.
Midpoint =

=

=

= (- 1, 1)
This is the center.
The equation of a circle is (x - h)² + (y - k)² = radius² where (h, k) is the center.
Plug in our given information now.
(x + 1)² + (y - 1)² = 6²
(x + 1)² + (y - 1)² = 36 is your equation.
Answer:
[-2; 1 ] is the new column vector
Step-by-step explanation:
See explanation in the attachment.
Answer:
25
Step-by-step explanation:
Andrea drinks 15 ounces of ater
It is 3/5 of the bottle
Therefore the amount which the bottle will hold can be calculated as follows
= 15 ÷ 3/5
= 15 × 5/3
= 75/3
= 25
Hence the bottle will hold 25 ounces of water