Answer:
5 hours
Step-by-step explanation:
So the set fee is 25. 45-25 = 20. Now, 4 dollars an hour. 20/4 = 5, so 5 hours
36, 43, 50, 57, 64
36 and 64 are two standard deviations out, so the empirical rule tells us 95% of scores will fall here with a normal distribution
5(5r-7)=-185
25r - 35 = - 185
25r = - 150
r = - 6
Step-by-step explanation:
Let the smaller number be x
Greater number = 3x + 15
3x + 15 + x = 63
4x + 15 = 63
4x = 63 - 15
4x = 48
x = 48/4
x = 12
Greater number = 3(12) + 15 = 51
Answer:
x=4+9i,:x=4-9i
Step-by-step explanation:
put it into the quadratic formula
x=-(b+/- sqr b^2-4ac)/2a
8+/- sqr 64-97/2
