What is the area of a sector of a circle with a radius of 9 centimeters and formed by a central angle that measures 120°?
1 answer:
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Answer:
A =
Step-by-step explanation:
given,
Matrix =
A =
determinant of matrix
|A| = a×a - (a-4)(a+4)
|A| = a² - a² +16
|A| = 16
inverse of the matrix
to calculate inverse of two matrix interchange the term a₁₁ with a₂₂ and multiply the -ve with a₁₂ and a₂₁
the inverse is
A =
- Slope-Intercept Form: y = mx + b, with m = slope and (0,b) as the y-intercept.
So starting with the y-intercept, the easiest method to find it is to convert this standard form equation to slope-intercept form. Firstly, add 5x to both sides:
Next, divide both sides by -4 and your slope-intercept form is
Looking at this slope-intercept form, <u>the y-intercept is (0, -5/2).</u>
Now to find the x-intercept, just set the y-variable to zero and solve:
<u>Our x-intercept is (-2,0).</u>
Answer is
=1720 pounds
30s, 70 L
=1720 pounds
30s, 70 L