The answer to the question is Ashby
Answer:
Of the statements given, the one that is not always true about a parallelogram is that A. The diagonals are congruent.
(1/2,-1/2)
You have to plug in the x point into the equation and the solution to that must equal your y point the only one that works for this is (1/2,-1/2).
-1/2=3(1/2)-2
-1/2=3/2-2
-1/2=-1/2. Works
-1/2=-(1/2)
-1/2=-1/2. Works
Hope this helps!
Answer:
Assume as book to be x and pen to be y.
3x+2y=395 equation 1
2x+5y=355 equation 2
Make any variable either x or y to be equal.
3x*2+2y*2=395*2
2x*3+5y*3=355*3
Here, I am making x as same so I cross multiplied
6x+4y=790 equation 3
6x+15y=1065 equation 4
Put minus sign in any one of the equation 3 or equation 4 in order to cancel out x.
6x+4y=790
-6x-15y= -1065
0 - 11y= - 275
y= - 275/ - 11
y= 25
As we got y, we can put the value of y in equation 1 or equation 2.
3x+2y=395
3x+2*(25)=395
3x+50=395
3x=395-50
3x=345
x=345/3
x=115
As we assumed the book to x and pen to be y
price of book = Rs. 115
price of pen= Rs. 25
