Question

Solve: 2x-3 = 15

7) Find the mean of 5,10,15,20,25

8) Find the area of triangle whose base is 18cm and altitude is 10 cm. 9) Find the value of 6

4

10) Add: 2a,3a,5a​

Answer 1

answer: 2x-3= 15

2x= 15+3

2x=18

x=9

Answer: 7 mean =( 5+10 +15+20+25)/ 5

= 75/5

=15

answe 8. Area of triangle = 1/2×b ×h

= 1/2×18×10

= 90 cm

Answer 2

Answer:Hope it helps u!!and please mark it as Brainliest

ps : i forgot the 8th question, so I had to do it at last