Answer:
D. -5 <= x < 1
Step-by-step explanation:
the values under the square-root radical must not be negative, AND
the value of the denominator must not be 0 or negative
x+5 >=0 or x >= -5
and 1-x > 0 or x < 1
So the answer is -5 <= x < 1
2.153, 2.164, 2.167
Those are just a 3 of thousands of possibilities.
15
Explanation:
you just divide 90 by 6
15 = 0.23x
x = 65.2
therefore 15 is 23% of 65.2