Answer:
A
Step-by-step explanation:
The position of an atom moving inside a cathode ray tube is given by the function:

Where f(t) is in meters and <em>t</em> is in seconds.
And we want to determine its instantaneous velocity at <em>t</em> = 2.5 seconds.
The velocity function is the derivative of the position function. Thus, find the derivative of the function:
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Then the instantaneous velocity at <em>t</em> = 2.5 will be:

Our answer is A.
To find the missing values you need to understand that the reciprocal is the fraction that is created when you invert (flip) The fraction.
Using this we actually have the missing values in the other fraction.
Please see the attached picture for the 3 missing values. They are in the boxes.
Answer:
5(3x + 5) or 15x + 25
Step-by-step explanation:
A regular pentagon has 5 sides of equal length. The perimeter is the sum of the lengths of those sides. We can use multiplication to find the sum of 5 of the same value:
P = 5(3x +5)
Perhaps you want it expanded. Using the distributive property, we multiply each term in parentheses by 5:
P = 15x + 25
Answer:
See explanation below
Step-by-step explanation:
The given triangle is a right angled triangle.
The triangle consists of three sides namely the hypotenuse (longest side), the opposite and the adjacent.
The slant side of the triangle is the hypotenuse which is also the longest side
The side facing the angle theta is the opposite (the height of the triangle)
The base of the triangle is the adjacent.
The angle theta shown is the angle of elevation of the triangle
Perimeter is equal to 2l+2w, or 2 times the length plus 2 times the width.
So to solve for this you'd take 2(6.5) + 2(4.23).
2(6.5)= 13
2(4.23)= 8.46
13+8.46= 21.46 meters.
Based on this, the answer is C.