Answer:
12
Step-by-step explanation:
add 3x both sides
8x +3 = 99
subtract 3 on both sides
8x = 96
divide by 8
x = 96/8 = 12
Answer:
The equation can define y as a function of x and it also can define x as a function of y.
Step-by-step explanation:
A relation is a function if and only if each value in the domain is mapped into only one value in the range.
So, if we have:
f(x₀) = A
and, for the same input x₀:
f(x₀) = B
Then this is not a function, because it is mapping the element x₀ into two different outputs.
Now we want to see it:
x + y = 27
defines y as a function of x.
if we isolate y, we get:
y = f(x) = 27 - x
Now, this is a linear equation, so for each value of x we will find an unique correspondent value of y, so yes, this is a function.
Now we also want to check if:
x + y = 27
defines x as a function of y.
So now we need to isolate x to get:
x = f(y) = 27 - y
Again, this is a linear equation, there are no values of y such that f(y) has two different values. Then this is a function.
Answer:
x=25/64
Step-by-step explanation:
by simple substitution
Just multiply 342g by .08 which is 8 % and you get 27.36
So then you decrease that 8% from 342
342-27.36=314.64
