The Head Start is a program established in the United States to provided comprehensive education, health, and parent involvement service. An example of a program that heads start to make is having more education to have higher salaries. The head start program is launched in 1965 by Jule Sugarman.
<span>a. take a summer and winter courses</span>
Answer:
3.1 ft/sec
Explanation:
we are talking about a right-angled triangle.
the Hypotenuse c is the line (rope) connecting the boat and the winch.
the side a is the height of the winch (8 ft straight up from the water level).
the side b is the distance of the boat to the dock on the surface of the water. 6ft.
c² = 8² + 6² = 100
c = 10 ft
when pulling in 1.5 ft of the rope, I create a new triangle, where side a is still the same, the new side c is 1.5 ft shorter than the original one, and we need to calculate the new side b based on that.
the difference of original b and new b is then the distance per second (= the rate) of the boat being pulled at that point.
so,
(10-1.5)² = 8² + b²
8.5² = 64 + b²
72.25 = 64 + b²
8.25 = b²
b = 2.9 ft
original b - new b = 6 - 2.9 = 3.1 ft
=> the boat's rate is 3.1ft/sec
Answer:
Because soil analysis can indicate the existence of flammable substances. Which indicates that the fire was caused by someone in a criminal manner.
Explanation:
As we know, the soil represents the surface layer of the earth where the plants are fixed and remove the nutrients they need to survive.
The soil is formed through the weathering of the rocks having the minerals that its original rock has. The soil has no flammable substance, as it is basically made up of sand, clay and silt. In addition, the soil is a porous environment, which allows any liquid released onto it to infiltrate at a considerable speed.
For this reason in the investigation of a criminal fire, the analysis of soil samples can be very useful. This is because soil analysis can indicate the presence of some flammable substance that has infiltrated. This can confirm that the fire was provoked and was criminal.
<u>D. Constructive</u>
Standing refers to the types of wave and antinode is a point on the wave. Only constructive and destructive are interference, and destructive only happens when they are <u>out</u> of phase