19 beats = 1/4 minutes
multiply each side by 4: 76 beats = 1 minute
76bpm
A^-b is the same as 1/a^b.
When there is a negative power, place the number and power over 1.
a^b/a^c = a^(b-c).
c is a negative power, because it is being divided, and is underneath b, which is a positive (and so it stays in the numerator).
a^c/b^c = (a/b)^c
Inside this one, the power of c is distributed to all numbers inside the parenthesis, in this case a and b.
hope this helps
Answer:
12.5
Step-by-step explanation:
75-25=50
50 divided by 4 =12.5
Answer:
40000
Step-by-step explanation:
Simple interest (I) is calculated as
I = 
P is the amount borrowed , R is the interest and T the time in years
Here I = 2000 , R = 5 and T = 1 with P to be found , then
2000 =
( multiply both sides by 100 )
5P = 200000 ( divide both sides by 5 )
P = 40000
<span>-4p-7=5p+11
-4p - 5p = 11 + 7
-9p = 18
p = -2</span>