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1 answer:
Answer:
a) t(n) = 200n -238
b) t(n) = 2.7n -4.3
Step-by-step explanation:
This is the same sort of problem as writing the equation of a line through two points. The slope (coefficient of n) is found using the slope formula:
m = (y2 -y1)/(x2 -x1)
And the constant term is found from one point and the slope:
b = y1 -m·x1
As always, if you have a number of these to do, you can save some trouble by putting the formulas in a spreadsheet. It will guarantee the formula is executed without mistakes.
In the attached, we have labeled the points (n1, t1), (n2, t2) instead of (x1, y1) and (x2, y2).
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a) t(n) = 200n -238
b) t(n) = 2.7n -4.3
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Answer:
A. 3x^2 + 4 = 52
3x^2 = 52 - 4
3x^2 = 48
x^2 = 48/3
x^2 = 16
x =
x = 4
B. x^2 - 121 = 0
x^2 = 121
x =
x = 11
C. (b + 4 )2 = 49
2b + 8 = 49
2b = 49 - 8
2b = 41
b = 41/2
Answer:
The angle is 58 degrees
Step-by-step explanation:
Given
See attachment for kite
Required
The angle at the tail end
Represent this angle with x.
From the attached kite, we have:
1 angle = 122
2 angles = right-angled
So, we have:
--- sum of angles in a kite
Solve for x
