Answer:
A
Step-by-step explanation:
2x² + 5x = 12
2x² + 5x - 12 = 0
x² + 5x - 24 = 0
factors of 24 are 1, 2, 3, 4, 6, 8, 12, 24. the only pair that adds to 5 is 8 and 3
2x² - 3x + 8x - 12 = 0
split the equation and factor
2x² - 3x = 0 ||| 8x - 12 = 0
x(2x - 3) ||| 4(2x - 3)
therefore the pair is (2x - 3)(x + 4)
2x - 3 = 0
2x = 3
x = 3/2
or
x + 4 = 0
x = -4
Answer: 0.00724
Step-by-step explanation:
7.24 divide by 1 = 7.24
7.24 divided by 10 = 0.724
7.24 divided by 100 = 0.0724
7.24 divided by 1000 = 0.00724
Answer:
40 persons
Step-by-step explanation:
Data provided :
The power put out by a single person = 100 W
Power required by an electric clothes dryer = 4.00 kW = 4000 W
Thus,
The number of persons required to produce 4000 W of power
= ( Power required ) / ( power produced per person )
or
= (4000 W) / (100 W/ person)
or
= 40 persons
Hence, the number of persons required is 40
Answer: $2.40
Step-by-step explanation: Emily would pay $2.40 in total. If you multiply $0.60 x 4 you'll get $2.40
