N/a the number of books is not given. -fvmousskaylaa
Answer:
36x-3y+4z^2+26-7x^2
Step-by-step explanation:
Okay well for starters, you can't subtract that because it's an expression, not an equation. And secondly, there was '?' which I'm going to assue=me was a typing error.
Now to actually simplify this mess of an expression, you just need to combine the like-terms! Once you do that you really can't do anything else, since you don't know the varibles.
Answer:
B
Step-by-step explanation:
The level of the river is 34 feet, so that is the constant. It drops at a rate of .5 feet per day. This means that the water level is getting lower, so we would be subtracting in this case.
Answer:
13 1/3 miles
Step-by-step explanation:
inches/miles = inches/miles
3/10 = 4/x
3x = 40
x = 13 1/3
Distance from 5 to 12 on the number lines = 12 - 5 = 7
This distance is expressed by the expression 3x - 2.
So,
3x - 2 = 7
3x = 7 + 2
3x = 9
x =9/3
x = 3
Thus, the value of x is 3 .