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jekas [21]
3 years ago
13

Calculate the area of this circle please

Mathematics
1 answer:
Anni [7]3 years ago
4 0

Answer:

2289.06 cm

Step-by-step explanation:

the equation for area of a circle is \pi r^{2}

Radius is 1/2 the diameter = 27

3.14 (27^2)=2289.06 cm

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7r²+9=1 quadratic equation.
dezoksy [38]
<span>7r²+9=1 

</span><span>the equation is contradictory, just to prove

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7r² + 9 -1 = 0

7r² + 8 = 0

<span>We write the equation in the form of products of
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7 0
3 years ago
if the vertex of a parabola is (-4,6) and another point on the curve is (-3,14), what is the coefficient of the squared expressi
Softa [21]

Answer:

8

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

Here (h, k) = (- 4, 6 ), thus

y = a(x + 4)² + 6

To find a substitute (- 3, 14) into the equation

14 = a(- 3 + 4)² + 6 ( subtract 6 from both sides )

8 = a

Thus the coefficient of the x² term is a = 8

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3 years ago
17. Simplify (3 × 22) ÷ 6 + [28 – (4)2] = ?
Effectus [21]

Answer:

31

Step-by-step explanation:

(3*22=66) / 6 + [28n - (4)2=20]

66 /6 = 11+ [20]

11+20= 31

7 0
3 years ago
A small company has 20,000 shares. Anastasia owns 400 of these shares. The company decides to split its shares. What is Anastasi
Pani-rosa [81]
The answer is the B one or 2%.
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3 years ago
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