Can you plz help I really don’t get it
1 answer:
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ANSWER
The percentage decrease is 10.4%.
EXPLANATION
To calculate percentage decrease, use the formula,
Percentage decrease
Yesterday the price of coffee was 2.40. This is the old price.
Today the price is 2.15. This is the new price.
To the nearest tenth, we have:
Therefore the percentage decrease is 10.4%.
The percentage decrease is 10.4%.
EXPLANATION
To calculate percentage decrease, use the formula,
Percentage decrease
Yesterday the price of coffee was 2.40. This is the old price.
Today the price is 2.15. This is the new price.
To the nearest tenth, we have:
Therefore the percentage decrease is 10.4%.
In order to graph the relationship, we will need to write the expression as the equation of a straight line as shown:
d = mt + b
d is the distance covered
t is the time taken
m is the speed
If you are skateboarding at a pace of 30 meters every 5 seconds. your friend is in-line skating at a pace of 9 meters every 2 seconds, this can be written as (5, 30) and (2, 9)
Get the slope of the line:
m = (9-30)/(2-5)
m = -21/-3
m = 7
Substitute m = 7 and the coordinate (2, 9) into the equation y = mt + b
9 = 7(2) + b
9 = 14 + b
b = -5
The required equation to plot will be expressed as y = 7t - 5
Plot the required graph
Learn more here: brainly.com/question/17003809
