where [x] is the whole part of the number x and {x} is the fractional part of the number x.
Answer:
41. s = semiperimeter
s = (a + b + c) /2
s = (120+170+250) /2
s = 270m
d is the correct option.
42. b is the correct option.
43. P = a + b + c
P = 120+170+250
P = 540m
a is the correct option.
44. A = √s((s-a)(s-b)(s-c))
=√270((270-120)(270-170)(270-250))
=9000m²
d is the correct option.
45. length of wire=P - space for gate
= 540 - 3
=537m
b is the correct option.
Answer:
it moves down
Step-by-step explanation:
...
Answer:
no . of items = 10
Position of mean = (n+1)/2
= 11/2 = 5.5th item
In the data 5.5 item is the average of 5th and 6th item
median = (x+2+x+4)/2
or 25= (2x+6)/2
or 50 = 2x +6
0r 2x = 44
x =22
Answer:
X=23
Step-by-step explanation:
11,13,15,19,_,_,30,39,46
The middle number is the first dash which is represented by x+2 which is equal to 25
25-2=23 which is x
Dash 2 which is represented by x+4 is equal to 23+4=27