Answer:
So the cost of labor is $65 per hour.
30 x 30 = 900 too low
40 x 40 =1600 too high - so the answer lies somewhere between
30 x 31 (too low) 39 x 40 = too high
31 and 37 are the only primes between those numbers and that is her pin 3137
Answer:
41 -12√5
Step-by-step explanation:
- All square roots of natural numbers, other than of perfect squares, are irrational.
so, let the unknown irrational number be x,
solve:
√x + √5 = 6
√x = 6 - √5
( √x ) ² = ( 6 - √5 )²
x = ( 6 - √5 )( 6 - √5 )
x = 36 -6√5 -6√5 + 5
x = 41 -12√5