Answer:
d. −7/32
Step-by-step explanation:
The expression that we have to evaluate in this problem is:
We have to evaluate this expression for:
x = -2
y = 4
We start by rewriting the expression by rewriting it using the following:
So the expression can be rewritten as
Now we observe that:
Therefore, by substituting x = -2 and y = 4 into the expression, we find:
Answer:
Its C :)
Step-by-step explanation: So 41 + 10 + 15 is 66, which is just about 8*8 :)
For this case we first write the equation of which we will use:
I (db) = 10log (l / l)
We substitute the value of l.
We have then:
l = 10 ^ 8lo
Substituting in the given equation:
I (db) = 10log ((10 ^ 8lo) / lo)
Rewriting:
I (db) = 10 * log (10 ^ 8)
I (db) = 80
Answer:
I (db) = 80
option 4
2 units to the right of gx
- 5 = -7 .
____________________________________________This would be one way to write the expresion/equation; in which "x" represents the unknown number.
Now, to solve for "x" ;
____________________________________________Given:
____________________________________________ - 5 = -7 ;
Add "5" to EACH SIDE of the equation:
_____________________________________________ - 5 + 5 = -7 + 5 ;
to get:
= -2 ;
x = (-2 * 3) ;
_________________________________x = - 6 .
_________________________________
