Answer:
see explanation
Step-by-step explanation:
Consider
x² = 64 ( take the square root of both sides )
x = 8 , x = - 8 ← are the critical points
Then for x² > 64
x < - 8 or x > 8
Answer;
x = 0.6 and x = -1.75
Step-by-step explanation:
80x2+92x−84=0
Use quadratic formula
x = (−b ±√(b2−4ac))/√2a
x = (-92 ± √(35344)) / 160
x = 95/160 and x = -280 / 160
x = 0.6 and x = -1.75
Answer: 30% of 500 is 150.
Answer:19.74 gallons of the gas in the tank is wasted.
Step-by-step explanation:
Since the efficiency of the gas engine is 6%, wastage is #= 100 - 6 = 94%.
Therefore wastage = 94% x 21=94 x21/100=19.74 gallons
$9.50x45=$427.50(work per week)
$427.50-$55=$372.50(amount of money he earns per week)
$372.50x4x12=$17880(1 month has 4 weeks and 1 year has 12 months)
Answer: $17880
