Answer is 10(2k+5)
-----------------------------------
Work Shown:
20k+50 = 10*2k + 10*5
20k+50 = 10(2k+5)
Note how we can distribute the 10 back in to check our work
10(2k+5) = 10(2k)+10(5) = 20k+50
so that confirms we have the right answer
Another thing to notice is that 10 is the largest factor that we can pull out of 20k and 50. The value 10 is the GCF (greatest common factor) of 20 and 50.
Okay. So the song lasts 221 seconds. 45 seconds have already beem done and 22 seconds is done in an hour. The equation would be set up like this:
45 + 22h = 221
Just by looking at the answer choices, A is already eliminated because it doesn't incorportate the 45 seconds. B does include the 45 seconds, but it subtracts, and in this case, we add time, not subtract. D is eliminated, because the h variable does not go with 45. The only equation that works is C and when you solve it, you get 8 hours. The answer is C.
Note: you solve the equation above by subtract 45 from both sides to get 176 = 22x, and dividing both sides by 22 to get x = 8.
The media is 94.5
Because you first order the number and then you have to add 87 and 100 dividend by 2 =187 over 2= 94.5
We are going to use the basic form of an exponential function:
to solve this problem.
Since we have tow points
and
, we are going to have a system of equations:
equation (1)
equation (2)
We know for our problem that
,
,
, and
, so lets replace those values in our equations:
equation (1)
equation (2)
Now, we just need to find
and
:
Dividing equation (2) by equation (1):
equation (3)
Replacing equation (3) in equation (1):
Finally, we can put our function together:
We can conclude that the exponential function whose graph passes through the points (2,8) and (5,512) is
.
Answer: A????????????
Step-by-step explanation:
you need to show the following