Answer:
Step-by-step explanation:
If you are always included to lead, that leaves 10 students to choose from.
If all that is important is being selected, then there are 10C3 = 120 ways to choose them.
If each selection has a unique duty, then there are 10P3 = 720 ways to assign them their jobs.
Use the Pythagorean theorem to solve for x.
A^2 + B^2 = C^2
(50)^2 + (x)^2 = (60)^2
2500 + x^2 = 3600
x^2 = 3600 - 2500
x^2 = 1100
x = sqrt 1100
x = 33.17 yd
Round the answer to the nearest tenth
x = 33.2 yd
Answer: the water tower is 33.2 yd tall
Remark
This is a quadratic. You can factor it, which is the easiest way to do it. A graph (which I will enclose) will confirm the answer.
Solve
a^2 + 8a + 7 = 0
(a + 7)(a + 1) = 0
This means there are 2 points where the graph hits the x axis and y = 0
x + 7 = 0
x = -7
The intercept point is (-7,0)
x+ 1 = 0
x = - 1
The intercept point is (-1,0)
Answer
The two points that solve this quadratic are
(-1,0) and (-7,0) <<<<<< Answer.
The graph below shows the same thing. Notice that the graph cuts the axis at the two points designated as the answer. If there are choices with this question please list them.
No it’s not (fillet: jdjdnfjfjfjjdndndkdj)