Grade 11Algebra
Suppose that four times the square of a number equals 20 times that number.What is the number?
Suppose that four times the square of a number equals 20 times that number.What is the number?
3 Answers
Pawan Prajapati
Answer:
Answer is 5
explanation:
5*5=25
25*4=100
Therefore 20*5=100
Thank you !
Pawan Prajapati
Askiitian
Answer is 5
explanation:
5*5=25
25*4=100
Therefore 20*5=100
Thank you !
Pawan Prajapati
Askiitian
Anshu Kumar
Suppose that number is x .Now we use the given condition then we get.
x^2*4 = 20*x
cancle one x from both side we get
4*x = 20
x = 20/4
x = 5
Ram Kushwah
Suppose the number is x
Four times the square of number=4x²
As per given
4x²=20*x
4x²-20x=0
4x(x-5)=0
x=0 or x-5=0
Thus x=0 or 5
Neglecting the x=0 then x=5
Thus the said number=5
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