Question

Q.7 Solve the problems:
1)




Simplify the following expression and find its value when x = -2
6x + 5(x - 2)
(3)

2) Name the solids that have:
a) 1 curved surface
(3
b) 6 faces
c) 5 faces and 5 vertices
3) Construct a right angled triangle whose one side is 4 cm and hypotenuse is 6 cm long. Write the
steps of construction also.
Q.8 Do as directed:
A) i) Express the following in standard form
(2
a) 6892.31
b) The distance between Earth and Moon is 384,000,000 m​

Answer 1

Answer:

6 + 5( -2)

6 +5 -10

= -2

6*(-2)+5(-2)-10

-12 + -10-10

-12-20

-32