Answer:
C.
Step-by-step explanation:
So if the number is less than 5, then round down to 0
if the number is 5 or more then round up to 10
4.25
5=5 so
4.2+0.10=4.3
1/2=50/100. 9/20=45/100
1/2 is bigger
Simplifying
15a + 7b = 0
Solving
15a + 7b = 0
Solving for variable 'a'.
Move all terms containing a to the left, all other terms to the right.
Add '-7b' to each side of the equation.
15a + 7b + -7b = 0 + -7b
Combine like terms: 7b + -7b = 0
15a + 0 = 0 + -7b
15a = 0 + -7b
Remove the zero:
15a = -7b
Divide each side by '15'.
a = -0.4666666667b
Simplifying
a = -0.4666666667b
