Question

had jaya scored 10 more marks in mathematics test out of 30. 9 times these marks would have been the square of her actual marks. how many marks did she get in the test?

Answer 1

Answer: Jaya scored 15 marks in her math exam.

                                 

Step-by-step explanation:

Let the marks scored by Jaya in her math exam be x

A/Q,

9(x+10) = x^2

9x+90 = x^2

x^2-9x-90 = 0

Now, -15+6 = -9 and -15*6 = -90

So, x^2-15x+6x-90 = 0

(x^2-15x)+(6x-90x) = 0

x(x-15) + 6(x-15) = 0

(x-15)(x+6) = 0

If x-15 = 0

Then , x=15

If x+6 = 0

Then, x= -6

But, marks cannot be negative in value.

Thus, Jaya scored 15 marks in her math exam.

Hope this helps you! Kindly reply back if there's any problem with this answer. Have a great day! :D

#ANSWERWITHQUALITY  #BAL