Find k and help with the equation!

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Work Shown:

The result is in the form with k = 6+10x

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Explanation:

First we need to get everything as an exponential expression with a base 2.

We rewrite 64 as and 4 as in the second step.

In the third step, I used the rule which says to multiply the exponents together. That's how I went from to . Then the 2*5x in the exponent becomes 10x.

To wrap things up, I used the rule which says to add the exponents when we multiply stuff of the same base together.

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.