Answer:
983,700,000
Step-by-step explanation:
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2x² <span>- x + 8 = 0
D</span>iscriminant = b² - 4ac
a=2, b=-1, c=8
D = (-1)² - 4 * 2 * 8 = 1 - 64 = -63
Answer:
All values of x is true
Step-by-step explanation:
Answer:
The number of original students desks were there in school before purchase was made is 980 .
Step-by-step explanation:
Given as :
The total number of new desks purchased including teacher and students = 295
The number of new desks purchased for students = 
of original students desks available
The number of new desks purchased for teachers = 50
Let The number of original students desks available before purchase = S
Now, According to question
∵ The total number of new desks purchased including teacher and students = 295
I.e The number of new desks purchased for students + The number of new desks purchased for teachers = 295
Or, of S + 50 = 295
Or, × S = 295 - 50
Or , × S = 245
∴ S = 245 × 4 = 980
So, original desks available for students = S = 980
Hence The number of original students desks were there in school before purchase was made is 980 . Answer
Answer:
Difference in volume between the two vinyl records = 3.872 in³
Step-by-step explanation:
Complete Question
2columbia records unveiled the lp (a vinyl record) in the waldorf astoria on june 18, 1948, in two formats: 10 inches in diameter, matching that of 78 rpm singles, and 12 inches in diameter. if the thickness of one vinyl record is 0.112 in, then determine the difference in volumes between the 10 inch and 12 inch records.
Each of the vinyl records will be modelled as a cylinder
Volume of a cylinder = πr²h
For the 12 inches diameter records.
r = (12/2) = 6 inches
h = thickness = 0.112 inches
Volume = π × (6²) × 0.112 = 12.672 in³
For the 10 inches diameter records
r = (10/2) = 5 inches
h = thickness = 0.112 inches
Volume = π × (5²) × 0.112 = 8.8 in³
Difference in volume between the two vinyl records = 12.672 - 8.8 = 3.872 in³
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