Step-by-step explanation:
Note that t = d/r where t is time, d is distance, and r is rate/speed.
We can come up with two equations with the information given and the equation:
t_1 hr = (10 km)/(x km/hr)
t_2 hr = (12 km)/(x - 1 km/hr)
<em>where t_1 is the time taken to run the 10km the first day and t_2 is the time taken to run the 12km the second day.</em>
We know that 30 minutes is 1/2 of an hour and that t_1 is 30 minutes less than t_2 (as stated in the question). Therefore, we can write:
t_1 = t_2 - 1/2
Substituting the values we derived:
(10 km)/(x km/hr) = (12 km)/(x - 1 km/hr) -1/2
Then we can evaluate by multiplying by 2x(x-1) on both sides:
20(x-1) = 24x - (x)(x-1)
20x - 20 = 24x - x^2 + x
x^2 -5x -20 = 0
And we are done.
I hope this helps! :)
The correct answer is that she picked 16 green peppers. We can work this
out because 16 + 4 = 20, and 4 x 4 is 16, so therefore there were 16
green peppers and 4 red peppers.
Answer: Systems of linear equations can only have 0, 1, or an infinite number of solutions. These two lines cannot intersect twice. The correct answer is that the system has one solution.
Step-by-step explanation:
Answer: a) $2155, b) $1763.03.
Step-by-step explanation:
Since we have given that
Number of cable knit sweaters = 15
Cost per sweaters = $65.00
Number of pairs of khaki twill pants = 22
Cost of each pair = $50.00
Number of casual jackets = 18
Cost of each jackets = $62.00
total sale volume would be
Employee discount = 35%
Additional discount = 15%
So, Total markdown dollars taken is given by
Hence, a) $2155, b) $1763.03.
Square root of 154m^2 = 12.5~
So adding 1.5 to 12.5 and subtracting 1.5 to 12.5 gives us 11 and 14
Your dimensions are 11x14
Brainliest?
Thanks!
