For this case we have the following expression:

Rewriting the expression we have:

Where,
x: exponent to which we must raise the expression to obtain 7 as a result.
We have then:

The exponent must be equal to 1:

Clearing x we have:

Substituting valres:
Answer:
you must raise the expression to 2
There is 14 beads, and out of it there are 4 red ones. You will divide 4 by 14, and get 0.28. 0.28 is equal to 28%
<span>A and C represent the same level of precision because they have the same number of places after the decimal point.</span>
The ratio 9:7 gives you following statement:
- Carl will win in 9 cases from 9+7=16;
- Carl will lose in 7 cases from 16.
Then the probability that Carl will lose is

Answer: 