Change the numbers into improper fractions then subtract
The answer to your question is 1
x< -1 is the graph going down or up when x is less than -1? its going down , so this is true
Range is the y values. It appears to go down to y=5 and go up so its not all reals
x< -1 is the graph going down or up when x is less than -1? its going down , so this isn't true
Domain is the x values and it does include all reals
Minimum (-1, 5), is that the value of vertex at the bottom, yes it is, so this is true
Answer:
-0.34772
Step-by-step explanation:
One way of doing this problem is to change the base from 5 to 10.
Use the change of base formula:
log x
log x = ------------
5 log 5
so:
log (4/7) log 4 - log 7
log (4/7) = --------------- = ---------------------
5 log 5 log 5
Note that "log x" above is the common logarithm of x and is to the base 10.
Continuing, we get:
0.60206 - 0.84510 -0.24304
---------------------------- = --------------------- = -0.34772 (This corresponds to
0.69897 0.69897 the second given
answer choice.)
You gave us the speed and the frequency, and you need the wavelength.
You were also nice enough to remind us that (fqy)x(lng) = speed.
So . . . F x W = 343 m/s
Divide each side by F :
W = (343 m/s) / F
W = (343 m/s) / (240 / s)
W = (343/240) m
<em>W = 1.429 meters</em>