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UNO [17]
3 years ago
9

Factor 21x^2 - 37x + 12

Mathematics
1 answer:
seropon [69]3 years ago
8 0
Answer: (7x-3)(3x-4), rewrite 37x as 9x-28x and factor out 3x from 21x^2-9x. then factor out 7x-3 and you should be good. i hope this helped!
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How do you round 600 to the nearest hundred?
Svetllana [295]

Answer:

600

Step-by-step explanation:

600 hundred is already rounded.

Say if the number was 650, it would round to 700. But if it was 610 it would round to 600.

7 0
3 years ago
(15.34) The level of nitrogen oxides (NOX) in the exhaust of cars of a particular model varies Normally with mean 0.21 g/mi and
MrMuchimi

Answer:

a level of significance of 0.01 = 1%

Step-by-step explanation:

given

Z = 0.0001

mean μ=0.21 g/mi

variate x= 0.21 + 0.03

standard deviation σ= 0.05 g/mi.

N = sample population  20 cars

z = (x −μ )/[σ /√N  ]

Z =\frac{x −μ}{\frac{σ}{√N} }

Z = 0.03/ (0.05/√20) = 0.03/0.0111

Z = 2.63 +- 0.0001

Z=  2.6301  or 2.6299

checking the level of significance table from a statistical book gives

a level of significance of 0.01 = 1%

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7 0
3 years ago
The wingspans of Rodrigues fruit bats are normally distributed, with a mean of 82.5 centimeters and a standard deviation of 2.5
IrinaK [193]
81.5%
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3 0
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