Order the data from least to greatest and then subtract the smallest value from the largest value in set.
Step-by-step explanation:
8x^3 y^-2 z^-4/6x^-1 yz^-5 =
4/3 (x^4 y^-3 z)
or
4x^4 y^-3 z/3
Using the vertex of the quadratic equation, it is found that:
The rocket will reach its peak height of 345 meters above sea level at 6.53 seconds.
<h3>What is the vertex of a quadratic equation?</h3>
A quadratic equation is modeled by:

The vertex is given by:

In which:


Considering the coefficient a, we have that:
- If a < 0, the vertex is a maximum point.
- If a > 0, the vertex is a minimum point.
In this problem, the equation is given by:
h(t) = -4.9t² + 64t + 136.
The coefficients are a = -4.9 < 0, b = 64, c = 136, hence the instant of the maximum height is given by, in seconds:

More can be learned about the vertex of a quadratic equation at brainly.com/question/24737967
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Answer:
Step-by-step explanation:
3 times 12 equal 36.
36 minus 15 equals 21.
So Joaquin uses 21 light bulbs.