Answer:
5 seconds
Step-by-step explanation:
The relationship between "d" and "the ground" is not described. If we assume that "d" is distance above the ground, then the rock will hit the ground when d=0. This gives rise to the quadratic equation ...
-t^2 +4t +5 = 0
-(t -5)(t +1) = 0
t = 5 or t = -1 are solutions. Only the positive solution is useful.
The rock will hit the ground after 5 seconds.
Answer:
<h2> 6.2</h2>
Step-by-step explanation:
s = 10 so ¹/₂s = 5
Pythagorean theorem:
Answer:
B ( -1,-7)
A (-3,-2)
C (6, -1)
Step-by-step explanation:
<u>Explanation</u>:-
Given vertices are A( -3,2) , B(-1,7) and C(6,1)
Reflection about the x-axis then the coordinate points are transformed to
(x,y)→ (x,-y)
A(-3,2)→ A¹(-3,-2)
B(-1,7)→ B¹(-1,-7)
C(6,1)→ C¹(6,-1)
Answer: 16 inches
Step-by-step explanation:
Complete question
(A cylindrical container can hold about 1256 cubic inches of water. the diameter of the cylinder is 10 inches long. approximate the height if the cylinder to the nearest inch . Use 3.14 to approximate the value of pi)
Volume of a cylinder = 3.14 * r² * h
r = radius of the cylinder
H = height of the cylinder
Pi = 3.142
Radius = diameter/ 2
R = 10/2 = 5 inches
1256 = 3.14 * 5² * h
1256 = 78.5h
Divide both sides by 78.5 to get h,
H = 1256 / 78.5 = 16 inches
The height of the cylinder is 16 inches
