What is the formula for the area of a sector?

Mathematics

2 answers:

Assoli18 [71]3 years ago

6 0

Answer: A = N/360 x (pi x r^2).

Step-by-step explanation:

looked it up online

CaHeK987 [17]3 years ago

6 0

Answer:

Area of a sector= ½ r² ∅

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Write as an algebraic expression: 1) a% of 80 2) 17% of b 3) a% of b

Anna35 [415]

1) 4a/5
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2) 17b/100 or 0.17b
17% of b = (17/100)(b) = 17b/100 [ = 0.17b ]

3) ab/100
a% of b = (a/100)(b) = ab/100

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Scrat [10]

Answer:

The solution is given below

Step-by-step explanation:

The preparation of the post closing trial balance is given below

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2 years ago

Complete the equation: x2+10x+__=(__)^2 A. 25; x+5 B. 25; x−5 C. 10; x+10 D. 10; x−10

erastovalidia [21]

Answer:

Answer A) 25, and x+5

Step-by-step explanation:

You need to complete the square by adding a constant that makes the quadratic expression a perfect square of a binomial. So base your analysis on the fact that the coefficient accompanying the square term of x is one, and the fact that the middle term has coefficient 10 which is twice "5" so 5 is the likely candidate for the binomial that goes squared: (x + 5) and the square of 5 (25) is what you need to add as constant term to get the perfect square of a binomial:

$x^2+10x+25=(x+5)^2$