Answer:
<h2>3</h2>
Step-by-step explanation:
IF point E lies on the line segment DF, this means that all the points DEF are collinear and DE+EF = DF.
Given parameter
DE = 6
DF = 9
Required
EF
Substituting the given parameter into the expression above to get the required will be;
DE+EF = DF.
EF = DF-DE
EF = 9-6
EF = 3
Hence the length of EF is equivalent to 3
Answer:
The null hypo would be the difference is greater than 0
so the alternate hypothesis would be less than or equal to 0
H1: µd ≤ 0
Answer:

Step-by-step explanation:



or

Answer:
(a) 150
(b) 384
(c) 84
(d) 261
(e ) 480
Step-by-step explanation:
(a)
Let 'a' be a number such that the half of his third is 25; i.e.
Hence, the number is 150.
(b)
Let 'b' be the number such that the quarter of his half is 48 i.e.

Hence the number is 384.
(c)
Let 'c' be the number such that the third quarter or, increased by 17 is 80.

Hence, the number is 84.
(d)
Let 'd' be the number such that its triplet, reduced by 28 is 755

Hence the number is 261.
(e
Let 'e' be the number such that double his third, increased by 80 is 400.

Hence, the value of the number is 480.