5x² + 25x = 0
5x(x) + 5x(5) = 0
5x(x + 5) = 0
5 5
x(x + 5) = 0
x = 0 or x + 5 = 0
- 5 - 5
x = -5
Answer:
35 ft
Step-by-step explanation:
The arch is in the shape of a semicircle.
The distance around the arch is about 110 feet. This is the same as the circumference of the arch.
The height of the arch is the radius of the arch.
The circumference of a semicircle is given as:
where r = radius
Therefore:
110 = πr
=> r = 110/π
r = 35.01 ft ≅ 35 ft
The height of the arch is 35 ft
Answer:
Step-by-step explanation:
We are given the following in the question:
Population D:
30% of the turtles have a shell length greater than 2 feet.
Sample size,
Number of turtles that had shell length greater than 2 feet,
Sample proportion:
Population E:
20% of the turtles have a shell length greater than 2 feet.
Sample size,
Number of turtles that had shell length greater than 2 feet,
Sample proportion:
We have to find the difference between the sample proportion.
Difference in sample proportion =
Answer:
2
Step-by-step explanation:
2/3x + 8/3 = 2x
multiplicate each by 3 : 2x + 8 = 6x
Put all the x on the same side : 8 = 4x
divide each by 4 : 2 = x
x = 2