15u - 12u = 5
First combine like terms
3u = 5
Then isolate the variable by dividing both sides by 3
u = 5/3
u = 1 2/3
Hope this helped!
-TTL
First evaluate the exponent to 2 log(1000x)=4
Then divide both sides by the same factor 2
Then cancel terms and divide to then simplify to get your answer as log(1000x)=2
Hi there!
Let's solve this equation step by step!

First add 7 to both sides.

Next we need to take a look at the meaning of the stripes between our variable. Those stripes mean we are dealing with an absolute value function. The absolute value stripes make everything between the stripes positive; also when we plug in a number. In this particular question we can plug in both -13 and 13 at the position of n, because when -13 is made positive, it fulfils the equation.
Hence,

or

~ Hope this helps you!
Answer:
c
Step-by-step explanation:
hope this helps
:)
Use f and m for "female" and "male." Then f = m + 16, and f + m = d (total)
So now we have the system of linear equations
f = m + 16
f + m = d
We can eliminate f by subst. m + 16 for f in the second equation:
d-16
m + 16 + m = d, or 2m + 16 = d. Find m. 2m = d - 16, so that m = --------
2
Assuming that the male horses are either brown or black, and that 25% of these are brown, then the rest must be black. This number is
d-16
0.75 [ --------- ] .
2