Distance = Speed x time
60MPH x 3 Hours = 180 Miles
Therefore at 60MPH, he must drive 1 extra hour to reach is destination.
The simplified expression of 2√8x³(3√10x⁴ - x√5x²) is 24x³√5x - 4x³√10x
<h3>How to determine the simplified product?</h3>
The complete question is added as an attachment
From the attached figure, the product expression is:
2√8x³(3√10x⁴ - x√5x²)
Evaluate the exponents
2√8x³(3√10x⁴ - x√5x²) = 2 *2x√2x(3x²√10 - x²√5)
Evaluate the products
2√8x³(3√10x⁴ - x√5x²) = 4x√2x(3x²√10 - x²√5)
Open the bracket
2√8x³(3√10x⁴ - x√5x²) = 12x³√20x - 4x³√10x
Evaluate the exponents
2√8x³(3√10x⁴ - x√5x²) = 24x³√5x - 4x³√10x
Hence, the simplified expression of 2√8x³(3√10x⁴ - x√5x²) is 24x³√5x - 4x³√10x
Read more about expressions at:
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Answer:
Null hypothesis: 
Alternative hypothesis:
And for this case we assume that we have equal variances so that means:

For this case the degrees of freedom are given by:

And replacing we got:

And the best answer would be:
a. 38
Step-by-step explanation:
For this problem we want to test the following:
Null hypothesis: 
Alternative hypothesis:
And for this case we assume that we have equal variances so that means:

For this case the degrees of freedom are given by:

And replacing we got:

And the best answer would be:
a. 38
The volume of the air space surrounding the cone inside the cylinder is 1055.04 cm³
<h3 />
<h3>How to find volume?</h3>
The volume of the air space surrounding the cone inside the cylinder is as follows:
volume of the air space = volume of cylinder - volume of a cone
volume of cylinder = πr²h
volume of cylinder = π16 × 5²
volume of cylinder = 400π
volume of the cone = 1 / 3 πr²h
volume of the cone = 1 / 3 × π × 12 × 4²
volume of the cone = 64π
Therefore,
volume of the air space = 400π - 64π
volume of the air space = 336π
volume of the air space = 1055.04 cm³
learn more on volume here:brainly.com/question/12285019
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Triangle = 3
square = -2
star = 7