Your question is on Spanish but I'll try to answer it
log x 25 = -2 => x^-2 = 25
we know that x^-2 is the reciprocal value that is also written as (1/x)^2, according to this
=> (1/x)^2 = 5^2 => 1/x = 5 => x= 1/5
Check log (1/5) 25 = x => (1/5)^x = 5^2 => 5^-x = 5^2 => -x=2 =>
x= -2 Good luck!!!
30 dollars
If she received 30 dollars in change then she paid with a 100 dollar bill
Answer:
There are 8 and 12 balloons for groups A and B, respectively.
Step-by-step explanation:
The ratio 2 : 3 means that there are 2 balloons in group A for each 3 balloons in the group B. The amounts of balloons asigned to each groups are determined by the following formulas:
Group A


Group B

There are 8 and 12 balloons for groups A and B, respectively.
I'm horrible at this so I'm just guessing.
X is the variable and x means multiplication symbol.
X + (X x 3 - 1) + (X x 3 - 1) - 4) <span>≥ 45 is the answer I got.
The answer to that inequality would be
X </span><span>≥ 7 I think.</span>
1. As you can see in the figure attached in the problem, you have the following system:
y≥5x-4 (i)
y≤5x/6 (ii)
2. When you solve the system, the values of the variables "x" and "y", are:
x=24/25
y=4/5
3. When you graph the system, you obtain the graph shown in the image attached.