If 4x – 5 = 96, what is the value of 4x + 12?
2 answers:
You might be interested in
Answer:
- 16
Step-by-step explanation:
Average is calculated as
average =
Thus for the given 10 numbers we have
= - 5 ( multiply both sides by 10 )
total = - 50
let the number added be x, then
= - 6 ( multiply both sides by 11 )
total + x = - 66, that is
- 50 + x = - 66 ( add 50 to both sides )
x = - 16
The new number is - 16
Related angle is 45 degrees, set up a triangle and use exact trig values to solve for x and y, then rationalise the denominators
