Four times the square of a certain number increased by 6 times the number equals 108.find the number
2 answers:
Hello there.
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Four times the square of a certain number increased by 6 times the number equals 108.find the number
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x = 4.5
x = -6
To effectively determine the correct answer, it would be helpful to write this into an algebraic expression. We let x as the number. We do as follows:
<span>Four times the square of a certain number increased by 6 times the number equals 108.
4x^2 + 6x = 108
The numbers can be either of the following since the equation generated was a quadratic equation which has two roots.
x = 4.5
x = -6 </span>
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The probability will be 1/9 or 1/4
1 revolution = 360 degrees
3/2pi = 1 second
1 revolution = 2pi radius
3/2pi (360/2pi)= 3/2pi (180/pi)=270 degree sec.
The answer is B.
(the equation to solve this with is: a^2 + b^2 = c^2)
The probability that x >17 will be found as follows:
the z-score is given by:
z=(17-15.2)/0.9=2
Thus
P(X>17)=1-P(x<17)=P-(z=2)
=1-0.9772
=0.0228
Answer:
Answer is B hope this helps :)
Step-by-step explanation: