Answer:
37.5
Step-by-step explanation:
if it decreases by 1/2 every 8 hours;
( 3×8= 24)
the first 8 hours 1/2×300 =150 gram
the second 8 hours(16 hours) = 1/2×150=75 gram
the third 8 hours(24 hours) = 1/2×75= 37.5gram
Answer:
5x<50
Step-by-step explanation:
Answer:
⇒ 
[Factorized form]
Step-by-step explanation:
Given expression:
We need to make 
the subject.
In order to do that we need to solve the expression for in terms of 
and 
We have,
Subtracting both sides by 
Taking square root both sides in order to remove square of
The difference of squares can be factorized and written as:
[difference of squares 
]
Part A:
The circumference of the circle is 197.92.
Explanation:
The formula for circumference of a circle is C=2 πr. If you insert the numbers, it would be C=2 x 3.14 x 31.5. Hence, the answer is 197.92.
Part B:
The area is 3117.25 square cm.
Explanation:
The formula for area of a circle is A= πr ². Inserting the numbers, it is A=3.14 x 31.5 ². Therefore the answer is 3117.25 cm ².
