Shawna got 16 items correct
Step-by-step explanation:
To find the percentage of answers or part of total answers we multiply the fraction with the total number of items.
Given
Total items on test = 20
Correct items fraction = 4/5
Then,
Shawna got 16 items correct
Keywords: Percentage, fractions
Learn more about fractions at:
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Answer:
Part 1) The equation tells us that Terry started at an elevation of 2,600 ft
Part 2) The elevation is decreasing by 50 feet each second
Step-by-step explanation:
we have
where
E(t) is Terry's elevation in feet
t is the time in seconds
Part 1) Find the E intercept of the equation
The E-intercept is the value of E when the value of t is equal to zero
so
For t=0
substitute
therefore
The equation tells us that Terry started at an elevation of 2,600 ft
Part 2) Find the slope of the equation
we have
This is the equation of the line into slope intercept form
The slope m is equal to
The slope is negative, because is decreasing
therefore
The elevation is decreasing by 50 feet each second