Answer:
Center: (9, 4)
Radius: 20
Explanation:
(x - 9)² + (y - 4)² = 400
The Circle Formula:
(x - h)² + (y - k)² = r²
where (h, k) is center points, r is radius
Rewrite the equation:
(x - 9)² + (y - 4)² = 20²
Identify following:
h = 9, k = 4, radius = 20
Hello!
To find the perimeter of any rectangle, use the formula P = 2l + 2w.
In this formula, l is the length and w is the width. Given that the width is 2x + 9 and the length is x + 4, we can find the perimeter.
P = 2(x + 4) + 2(2x + 9)
P = 2x + 8 + 4x + 18
P = 6x + 26
Therefore, the perimeter of the rectangle is 6x + 26.
Answer: 7920
Step-by-step explanation:
Convert 600mph to feet per hour.
600 x 5280 = 3168000 feet per hour
Convert feet per hour into seconds by dividing by 60 to get minutes and 60 again to get seconds.
3168000 / 60 / 60 = 880 Feet per second
Multiply by 9
880 x 9 = 7920 feet in 9 seconds
Answer:
15 kilometers per day
Step-by-step explanation:
To solve this problem, we can use a rule of three using the information given:
The group of people can travel 210 kilometers in 14 days, and they will travel the same distance each day, so they will travel X kilometers per day:
210 kilometers -> 14 days
X kilometers -> 1 day
210 / X = 14 / 1
X = 210 / 14 = 15 kilometers per day
To reach their goal of 210 kilometers in 14 days, they need to travel 15 kilometers per day.
6*14=84
the answer is 84cm²
