Solve the following equation:
5.3a - 7.9 = 2.6a + 2.9

a = 4

Step-by-step explanation:

To solve this equation you need to isolate a to one side of the equation. To rearrange the equation you must subtract or add each term to both sides. For example we will add 7.9 to both sides to begin isolating a. You should also add like terms when it is possible.

5.3a - 7.9 = 2.6a + 2.9

       +7.9               +7.9

5.3a=2.6a +2.9 +7.9=

5.3a=2.6a +10.8

Next, you should subtract 2.6a from both sides, and add/ subtract like terms.

5.3a=2.6a +10.8

-2.6a     -2.6a

5.3a-2.6a = 10.8

2.7a = 10.8

Last, you should divide both sides by 2.7, and solve for a.

2.7a = 10.8

/2.7         2.7

a = 10.8/ 2.7

a = 4

26

step-by-step explanation:

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.