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4 years ago

What does circumference stand for?

Mathematics

2 answers:

lord [1]4 years ago

6 0

Answer:

Think of it as the perimeter of the circle

katen-ka-za [31]4 years ago

3 0

Answer:

the enclosing boundary of a curved geometric figure, especially a circle.

The circumference of a circle is related to one of the most important mathematical constants. This constant, pi

Step-by-step explanation:

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The wingspans of Rodrigues fruit bats are normally distributed, with a mean of 82.5 centimeters and a standard deviation of 2.5

IrinaK [193]

81.5%
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3 years ago

A box contains 84 chocolates, of which 63 are dark chocolates. The rest are milk chocolates. What is the ratio of milk chocolate

loris [4]

Answer: 21:84

Explanation:

84-63=21, and then just do 21:84 lol

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3 years ago

If one yard of material cost 2.00 how much do 5 1/2 yards cost?

Vika [28.1K]

Answer:

$11

Step-by-step explanation:

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2 years ago

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A circle has centre (3,0) and radius 5. The line y = 2x + k intersects the circle in two points. Find the set

lara [203]

A circle with center $(3,0)$ and radius $5$ has equation

$(x-3)^2+y^2=25 \iff x^2 + y^2- 6 x = 16$

If we substitute $y=2x+k$ in this equation, we have

$x^2+(2x+k)^2-6x=16 \iff 5x^2+(4k-6)x+k^2-16=0$

This equation has two solutions (i.e. the line intersects the circle in two points) if and only if the determinant is greater than zero:

$\Delta=b^2-4ac=(4k-6)^2-4\cdot 5\cdot (k^2-16)>0$

The expression simplifies to

$-4 (k^2 + 12 k - 89)>0 \iff k^2 + 12 k - 89$

The solutions to the associated equation are

$k^2 + 12 k - 89=0 \iff k=-6\pm 5\sqrt{5}$

So, the parabola is negative between the two solutions:

$-6-5\sqrt{5}$

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3 years ago

If 5 + 6i is a root of the polynomial function f(x), which of the following must also be a root of f(x)? –5 – 6i 5 – 6i 6 – 5i 6

san4es73 [151]

Answer: 5-6i

The rule is that if f(x) has real number coefficients, then a root of x = a+bi pairs up with its conjugate pair of x = a - bi. In this case, a = 5 and b = 6.

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3 years ago

Read 2 more answers