Answer:
C: x > 0
Step-by-step explanation:
Division by zero is undefined. That 5x in the denominator must be > 0 for the whole expression to be defined. Thus, C: x > 0 is the correct answer here.
Answer: The numbers are 10.8 and 46.2.
Step-by-step explanation: The sum of two numbers is 57.
x + y = 57
Assume x is the larger number.
x - 3 = 4y
x = 4y + 3
Use subsitution.
4y + 3 + y = 57
y = -4y - 3 + 57
y = -4y + 54
5y = 54
y = 10.8
Plug in y.
x + 10.8 = 57
x = 46.2
Check.
46.2 - 3 = 4(10.8)
43.2 = 43.2
Davie will take 80/20= 4 hours to finish the tour. Horatio has only 2 and 1/2 hours to cover the same 80 miles. (80)/(2.5)= 32 miles per hour.
B is the answer
Because A and C could not be since the set have 4 results
D could not be because f(4)=. 12-5=7 not -7
The multiplicative inverse of -2/5 is -5/2
