<span> 2 square root of 7 − square root of 28
= 2</span>√7 - √28
= 2√7 - 2√7
= 0
Answer:
D. I and IV
Step-by-step explanation:
"Discrete" means the quantities can only assume specific (usually integer) values. It is contrasted with "continuous," which describes quantities that can assume any value in some range, not necessarily an integer value.*
_____
* quantum physics is ignored in this discussion.
254340000 I believe thats the answer
Answer:
The dolphin will be above the surface of the water for 2 seconds.
Step-by-step explanation:
Solving a quadratic equation:
Given a second order polynomial expressed by the following equation:
.
This polynomial has roots
such that
, given by the following formulas:



The height of the dolphin after t seconds is given by:

According to Micha's model, how long will the dolphin be above the surface of the water?
It stays above the surface of the water between the first and the second root. Initially, it is below water, when the first time for which
it crosses the surface upwards, and then the second time for which
it crosses the surface downwards.
We have to find these roots. So


Multiplying by -16




4 - 2 = 2
The dolphin will be above the surface of the water for 2 seconds.
Answer:
Option Negative 1 and four-fifths is correct
That is 
Step-by-step explanation:
Given problem is Negative start fraction 2 over 9 end fraction x=two-fifths
Given equation can be written as 
To find the value of x in the given equation :

Mutliply by
on both sides we have




therefore the value of x is 
Option Negative 1 and four-fifths is correct
That is 