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3 years ago

The diameter of the circle below is 82cm. Work out the radius of the circle

Mathematics

2 answers:

emmainna [20.7K]3 years ago

8 0

Answer:

Radius=41

Step-by-step explanation:

Preamble

Diameter=82

Radius=?

Formula

Radius=diameter/2

Radius=82/2

reduce the fraction

82/2=82÷2/2÷2=41/1

therefore radius=41

Dmitry [639]3 years ago

6 0

Answer:

Radius = 41

Step-by-step explanation:

Diameter/2=radius

82/2 =41

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Read 2 more answers

BRAINLIEST IF CORRECT ASAP

TEA [102]

Based on the definition of an angle bisector, there is an erro in line 1, because, BC is an angle bisector.

<h3>What is an Angle Bisector?</h3>

An angle bisector is a line segment that bisects an angle into congruent parts.

In the proof given, since C is the incenter of the isoscles triangle ABD, therefore, line segment BC bisects ∠ABD.

This implies that BC is an angle bisector of ∠ABD not altitude.

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brainly.com/question/24334771

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2 years ago

Find the x intercepts of the parabola with vertex (4,75) and y intercept (0,27)

user100 [1]

The equation for a parabola with vertex $(h, k)$ is
$y=a(x-h)^{2}+k$

We plug in:
$y=a(x-4)^{2}+75$

We find $a$ by plugging in the point $(0, 27)$ :
$27=a(0-4)^{2}+75$
$\Rightarrow 27=a(-4)^{2}+75$
$\Rightarrow 27=16a+75$
$\Rightarrow 16a=-48$
$\Rightarrow a=-3$

So our equation is
$y=-3(x-4)^{2}+75$

To find x-intercepts, we set $y=0$ :
$-3(x-4)^{2}+75=0$
$\Rightarrow -3(x-4)^{2}=-75$
$\Rightarrow (x-4)^{2}=25$
$\Rightarrow x-4=5, -5$
$\Rightarrow x=9, -1$

So the x-intercepts are 9 and -1.

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3 years ago

Find the distance between each pair of points. Round your answer to the nearest tenth, if necessary.

svetlana [45]

I don’t really understand I need more detail

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3 years ago