Answer:
Step-by-step explanation:
Given
Required
Find the equivalent
We start by changing the / to *
Factorize 10a - 5
Expand 4a² - 1
Express (2a)² - 1² as a difference of two squares
Difference of two squares is such that:
The expression becomes
Combine both fractions to form a single fraction
Divide the numerator and denominator by 2a - 1
Simplify the numerator
Hence,
=
Answer: 1/3
Step-by-step explanation:
Each friend gets 1/3
1/3 / 9 = 3
Answer:
Step-by-step explanation:
Given;
Answer:
54.5°
Step-by-step explanation:
Angle made by the sun to the building...
;Firstly draw a right angled triangle of which has the 70 foot as the opposite and 50 foot as the adjacent
Then the angle made by the sun is....
Tan theta = 70/50
Angle..theta = 54.5°
This question seems to me to be an exercise in applying the rule for a difference of squares in order to rewrite the difference of two relatively large numbers as the "simpler" product of other integers.