Suppose your hair grows at the rate of 1 25 inch per day. find the rate at which it grows in nanometers per second.

We just need to convert, separately, inches to (nano)meters, and days to second.

One inch is 0.0254 meters, and there are 10^9 nanometers in one meter. So, there are nanometers in an inch.

On the other hand, one days is composed by 24 hours, each composed by 60 minutes each composed by 60 seconds. So, there are

seconds in a day.

Now we can perform the substitution:

You can simplify the numeric part, getting

and thus

So, that's the speed, misured in nanometers per second.

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18