If an angle is given in minutes and seconds of an arc as well as degrees, remember that a minute is a sixtieth of a degree and a second is a sixtieth of a minute. For example, 20º35’26” is the same as 20+(35+26/60)/60. Your calculator will give you a decimal result of this calculation.
The simplification of a³ - 1000b³ and 64a³ - 125b³ is (a - 10b) × (a² + 10ab + 100b²) and 4a - 5b) • (16a² + 20ab + 25b²) respectively.
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Question 1: a³ - 1000b³
a³ - b³
= (a-b) × (a² +ab +b²)
- 1000 is the cube of 10
- a³ is the cube of a¹
- b³ is the cube of b¹
So,
(a - 10b) × (a² + 10ab + 100b²)
Question 2: 64a³ - 125b³
a³ - b³
= (a-b) × (a² +ab +b²)
- 64 is the cube of 4
- 125 is the cube of 5
- a³ is the cube of a¹
- b³ is the cube of b¹
So,
(4a - 5b) • (16a² + 20ab + 25b²)
Learn more about simplification:
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Answer:
X equals 50.
Step-by-step explanation:
500/10=50
So 3 pies with 8 pcs each.
8 x 3 = 24
3/4 of 24 is 18
the awnser is 18
