11. 21g
12. ?
13. X=1.35
14. X>-1
(I'm not sure about 12 because I don't have any paper to solve it at the moment. Sorry! Hope this helps anyway!)
I think the answer should be B.
Answer:
C) 6.25(b + 4) = 50.00
Step-by-step explanation:
I'm pretty sure this is right
(1 * 10) ^ 15 * (1 * 10) ^ 15
10^15 * 10^ 15
X^m * X^n = X^m +n
10^15 * 10^15 = 10^ 15+15 = 10^30 or (1 x 10) ^30.
Okay, here we have this:
Considering the provided information, we are going to identify wich equation applies, so we obtain the following:

Where x represents the uknown number. Then finally we obtain that the correct equation is the third one.
Now, let's find the missing number solving the equation:

Finally we obtain that the number is equal to 19.