Answer:
There is a total 50 questions.
Step-by-step explanation:
Let x = total questions in the exam
Since 82% of the test was scored correctly, that means 18% of the student's exam was scored incorrectly.
With this information we can write:
(Given that the student made 9 mistakes)
(divide 18% on both sides)
∴ There was a total of 50 questions in the examination.
Answer:
-5
Step-by-step explanation:
Answer:
189.98
Step-by-step explanation:
I’m pretty sure you just start solving for x like
x2 + 4 = x - 1
so on and so on
I'm guessing you meant the sum of a number AND 6? If so:
x+6=y or just x+6
x is a variable for "a number" and you add 6 to it. The y on the other side of the equals sign is because the sum (number you get when adding) is unknown due to the value of the x variable being unknown.
