Answer:
Step-by-step explanation:
Let c represent Chanda's age now. In six years, the Sokhem's age will be 2c. At that time, the sum of their ages is ...
(c+6) +2c = 60
3c = 54 . . . . . . . . subtract 6, collect terms
c = 18 . . . . . . . . . . divide by 3
Chanda is 18, Sokhem is 30.
_____
<em>Check</em>
In 6 years Chanda will be 24, Sokhem will be 36. The sum of their ages then will be 24+36 = 60. Since Chanda is 18 now, Sokhem's age then will be 2 times Chanda's age now.
Answer:
The right solution is:
(a) 0.8849
(b) 12.28%
(c) 4.9935
(d) 28004
Step-by-step explanation:
Given:
Mean,
= 4.5
Standard deviation,
= 0.3
(a)
P(x > 4.14)
As we know,
⇒ 

then,
⇒ 
(b)
P(4.8 < x < 5.04)
= 
= 
= 
= 
= 
or,
=
(%)
(c)
P(x > x) = 0.05
z value will be,
= 1.645
⇒ 

(d)
P(x < 5.01)
⇒ 


P(z < 1.70) = 0.9554
⇒ 

Step-by-step explanation:
do () first
2*1-1
then multiplication
2-1
then subtraction
=1
same reason as above
4 *2 -6
8-6
=2
Answer:
that is the solution is to the question
Answer:

Step-by-step explanation:
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