Answer:
r = 2.23
Step-by-step explanation:
Use the formula:
C = 2(pi)r
Solve for r:
r = C
/2π = 14
/2·π = 2.228
Step-by-step explanation:
The next step is
12 = - 2x
12 / - 2 = x
-6 = x
Let us make an equation to solve :
Y=mx+b (general form of a linear equation)
y=10x-20 (x is the number of haircuts,y is the amount she earns)
the minimum amount to carry out all the expenses is $20
so,
20=10x-20
20+20=10x
40=10x
40/10=x
4=x
so she must do 4 haircuts in an hour
12, 21, 39 is the sequence given the given rule. Just plug in n=1, 4, 10 to evaluate each term.
