So, if 60 beats was decreased by 2/5 before, we know that 60 beats = 3/5 of her heart rate after she ran the mile.
(Because 1 - 2/5 = 3/5)
So, 3/5 = 60, and we're trying to find 1.
So I would first divide both sides by 3.
3/5 = 60
/3 /3
1/5 = 20
Then multiply both sides by 5.
1/5 * 5 = 20 * 5
1 = 100
So her heart rate was 100 beats per minute immediately after she ran the mile.
Answer:
g(x)= (1/6)x+5/6 is the inverse function of f(x)
Step-by-step explanation:
We have y= 6x-5
Then, we take x depending on y like:
6x-5=y
6x-5 +5 = y + 5
6x= y+5
6x/6=y/6 + 5/6
x= y/6+ 5/6
Now, we replace x by the function g(x) and y by the variable x, then we have
g(x)= (1/6)x+5/6 is the inverse function of f(x).
Hope that you understand.
It is given in the problem that in 1975, the number of restaurants chain is 15,250.
It is also given in the problem that 2000, the total number of restaurants is 21, 655. Therefore, the solution is is shown below:
% increase= ((# of restaurants is year 2000 - # of restaurants in year 1975)/number of restaurants in year 2000) * 100
% increase = (21,655-15250)/21,655 *100
% increase = 29.58%
Answer is 29.58%
Answer: 4 • (2x - 7) • (x + 3)
Step-by-step explanation:
(4x+12)(2x-7)
8x²-28x+24x-84
8x²-4x-84
Answer: 6.5? I think this is the answer but not sure.
