Answer:
Step-by-step explanation:
The given expression is:
-3(6f - 12) = 36 - 18f
To prove that L.H.S=R.H.S:
Multiply -3 (6f-12)
-3(6f)-3(-12)
=-18f+36
=36-18f
Hence it is proved that L.H.S = R.H.S....
A2 + B2 = C2
A2 + 484 = 1024
A2 = 540
540 squared = 23.24
A = 23.24
<span>Formula : V + F – E = 2
where V = number if vertices, F = number of faces and E = number of edges
<u>Question a:</u>
V + F - E = 2
V = 2 - F + E
V = 2 - 12 + 18
V = 8
(a) </span><span>12 faces, 18 edges, <u>8</u> vertices
<u>Question b:</u>
</span>V + F - E = 2
<span>E = V+ F - 2
E = 14 + 8 - 2
E = 20
(b) </span><span>8 faces, <u>20</u> edges, 14 vertices</span>
Answer:
The number is 91
Step-by-step explanation:
Let x be the ones place digit and y be the tens place digit,
Then the number would be 10y + x,
We have,
y - x = 8
Possible values of y and x = { (8, 0), (9, 1) }
∵ 0 is not the digit of the number,
Hence, y = 9 and x = 1
Therefore, required number = 10(9) + 1 = 90 + 1 = 91
