Question

(b) In the figure given below, AB || DC and angleC = angleD. Prove that
(1) AD = BC
(ii) AC = BD.​

Answer 1

Answer:

Find the product using the identity

(x + a) (x + b) = x² + (a+b)x+ ab.

a. (2x - 7y) (2x + 8y)

b. 103 x 95

c. 505 x 502

d. (5p -7q) (5p - 7q)

$2 + 2 \infty - \infty$

On the surface of the moon, the distance to the center of mass is the same as the radius: r=1.74×10

6

m=17,40,000 m. The acceleration due to gravity on the surface of the moon can be found using the formula:

g=

r

2

GM

g=

17400000

(6.673×10

−11

)(7.4×10

22

)

The acceleration due to gravity on the surface of the moon is 1.620 ms

2

.