Answer:
this is the answer
Step-by-step explanation:
9514 1404 393
Answer:
D. Dividing both sides of the equal sign by a negative number.
Step-by-step explanation:
The inequality symbol is reversed when an operation is performed that changes ordering. The most usual cases are multiplication or division by a negative number.
For example:
-2 < 1
2 > -1 . . . . multiply or divide both sides by -1
__
These operations are not the only ones that change ordering. Care must be taken when applying functions. f(x) = 1/x and f(x) = cos(x) are functions that potentially change ordering, for instance.
_____
We note that the question asks about inequalities, and the discussion above is about inequalities. However, the answer choices all refer to an equal sign. (?!) We assume the expected response is ...
D. Dividing both sides of the equal sign by a negative number.
When both the measures are in the same units, then the ratio can be calculated.
1 hour = 60 minutes
⇒ 2 hours = 2 x 60 minutes
= 120 minutes
The ratio of 50 minutes to 2 hours is then:
50 : 120
⇒ 5 : 12
The sum of the angles of a triangle will always equal 180 degrees.
solution;
a) From the given information,
N = 53,min=42 and max = 129
K = 1+3.322log₁₀53
= 1+3.322(1.724)
= 1+5.728
= 6.728
Number of classes is 7.
b) find the width of the class interval first
width = max – min /classes
= 129-42/7
= 87/7 =12.42
Take the next largest number 13 as class width. Since the minimum value is 42
The lower limit iof the first class could be 40.
So,
The upper limit of the last class is,
40+(13 x 7) = 131
As the upper limit of the last class covers the entire range of values,
It is better to take the lower limit of the first class as 40
The lower limit of the first calss could be 40.