Question

Plssssss answer 2nd,3rd&4th question!!!

Answer 1

2) 2x + 3y = 5

7x -9y = -2

multiply first equation by,3

6x + 9y = 15

add

7x +6x = -2 +15

13x = 13

x= 1

put in 7x - 9 y = -2

7 - 9y = -2

9y = 9

y = 1

So 12x + 15 y= 12+15= 27

3) area of rhombus = 1/2( product of diagonals)

= 1/2 (16 × 30)

= 240

Area also is altitude × side

as side = √ diagonal/2)^2 + diagonal/2)^2

= √ 64 + 225 = √289 = 17

So altitude= 240/17= 14.11

4) tp + tp+2q = a + ( p-1)d + a + ( p+2q -1)d

= 2a + d( p-1 + p +2q -1)

= 2a + d( 2 p + 2q -2)

= 2( a + d( p+q -1))

=2 t p+q