Please answer this question
Answers
Pick out the solution from the values given in the bracket next to each question :-
( a )
( b ) 2r = 8 (3,4,5,6)
( a )
==>
==> P = 13 × 5
==> P = 65
Therefore, the solution is 65.
( b ) 2r = 8 (3,4,5,6)
==> 2r = 8
==>
==> r = 4
Therefore, the solution is 4.
Check whether x=4 is a solution of the equation 2x-5=30.
==> Substitute x = 4 in 2x - 5 = 30
==> 2(4) - 5 = 30
==> 6 - 5 = 30
==> 1 ≠ 30
Therefore, x=4 is not a solution of the equation 2x-5=0.
Sonal got 5 marks less than that of Ritu in a test. If Ritu got 15 marks, how many marks are obtained by Sonal ?
Let the marks obtained by Sonal be y.
It is given that, Sonal got 5 marks less than Ritu...So the equation is :
==> 15 - 5 = y
==> 10 = y
Therefore, Sonal got 10 marks.
Give expressions for the following :-
( a ) x subtracted from 5.
( b ) 3 times x added to 2.
( a ) x subtracted from 5.
==> 5 - x
Therefore, the equation is 5 - x.
( b ) 3 times x added to 2.
==> 2 + 3x
Therefore, the equation is 2 + 3x.