I'm not exactly sure on this one but please bare with me haha
High tides and low tides are caused by the moon and tides are really all about gravity(hence why all of these answers have gravitational in them). And, when we are talking about "daily tides" it's the moon that causes them.
The moon's gravity draws in various areas of our world as it rotates. Since the moon is just 1/100th the mass of the Earth, it has enough gravity to shift objects about. The ocean on the moon's far side is still trying to bulge out against it. A high tide is what we term this bulge. (Water is easy to move around too)
This is tidal force, and there are differences between high tides and low tides.
- Total time=5h
- Time devoted for mathematics and science=2h
Let Time devoted for others be x



You have to use a calculator for both of the exact values using sin^-1 or Cos^-1 you can then times those together, with the final part the answer is sin 240 as sin(A-B) = sinAcosB-CosASinB
Answer:
it is 90*
Step-by-step explanation:
PLEASE BRAINLIEST!!!!!!!!
Answer:
Vertex: (-1,9) is true
Sample Points: (2,4) is not true
Step-by-step explanation:
Given


Required
Determine if the vertex and sample points exist for 
Solving for the vertex:

Writing the given equation in the form:

Expand the bracket

Open Bracket


Open bracket


Solve for x using:

Where
; 
<em>So:</em>



Substitute -1 for x in 

Simplify all brackets



Hence;
<em>The vertex (x,y) is (-1,9)</em>
<em>This is true</em>
Checking sample points: 
In this case;
and 
Substitute
and
in 





<em>Hence;</em>
<em>This sample points </em>
<em> does not exist</em>