Answer:
The mean of the numbers 5, 3, 6, x, 9, and 10 is given as 7.
To find the value of x, we can use the formula for the mean:
mean = (sum of all the numbers) / (number of numbers)
In this case, we have:
7 = (5 + 3 + 6 + x + 9 + 10) / 6
Multiplying both sides of the equation by 6, we get:
42 = 33 + x
Subtracting 33 from both sides of the equation, we get:
x = 9
Therefore, the value of x that makes the mean of 5, 3, 6, x, 9, and 10 equal to 7 is 9.