Answer:
Answer is 19.2
Step-by-step explanation:
60x60= 3600 63x63= 3969
3969
- 3600 = 369 square root of the 369= is 19.2
Answer:
x = 4 , y = 2
Step-by-step explanation:
Using the sine / tangent ratios in the right triangle and the exact values
sin60° = and tan60° = , then
sin60° = = = ( cross- multiply )
x = 4 ( divide both sides by )
x = 4
and
tan60° = = = ( multiply both sides by y )
y = 2 ( divide both sides by )
y = 2
Answer:
-9
Step-by-step explanation:
3x - 4 -(3x + 5)
3x - 4 - 3x - 5
3x - (4 + 5) - 3x
3x - 9 - 3x
(3x-3x) - 9
-9
Answer:
The number of children are 4 out of which 3 are girls
Step-by-step explanation:
Data provided in the question:
P(Two randomly selected children are girls) =
now,
let the number of children be 'n'
the number of girls be 'x'
thus,
P(Two randomly selected children are girls) = =
also,
=
thus,
=
or
=
or
2x(x-1) = n(n-1)
now
for x = 3 and n = 4
i.e
2(3)(3-1) = 4(4-1)
12 = 12
hence, the relation is justified
therefore,
The number of children are 4 out of which 3 are girls