Answer:
-3, if we assume that we only want positive square roots.
Step-by-step explanation:
Take the (positive) square root of both 64 and 121 to get 8 and 11. 8-11= - 3.
Hope this helps :)
Remember
|a|≥0 for all real values of a
so
|x-2|+4≤3
minus 4 both sides
|x-2|≤-1
false, absolute value can never be negative
no solution
a is answer
Answer:
Our number is 7.
Step-by-step explanation:
We also know that it's 2x + 21 = 5x.
Now we solve.
21 = 5x - 2x
21 = 3x
7 = x
