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3 years ago

8

How do you find the length of a line in a circle?

1 answer:

GREYUIT [131]3 years ago

8 0

Answer:

How to calculate and derive the formula for the Chord Length of a circle. The formula for the chord length is: 2rsin(theta/2) where r is the radius of the circle and theta is the angle from the centre of the circle to the two points of the chord.

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The function h(t) = −5t2 + 25t shown in the graph models an architectural arch:

alukav5142 [94]

Answer:

the answer is actually 0 ≤ x ≤ 5

Step-by-step explanation:

i got it right

6 0

3 years ago

11 POINTS PLZ HELP EMERGENCY

Bad White [126]

Part A

The given expression is:

$(-5(1+2i)+3i(3-4i)$

We expand to get:

$-5-10i+9i-12i^2$

Note that $i^2=-1$

$12-5-10i+9i$

$-5-10i+9i+12$

$7-i$

Part Bi)

The given expression is;

$\sqrt{-50}$

We simplify to get:

$\sqrt{25\times 2\times -1}$

$\sqrt{25\times} \sqr{2}\times \sqrt{-1}$

Note that:

$\sqrt{-1}=i$

$5\sqr{2}i$

This is now of the form $a+bi$ , where $a=0,b=5\sqr{2}$ .

This explains why it is a complex number;

Part bii)

The given expression is :

$\frac{\sqrt{-50} }{\sqrt{5}}$

We simplify to get

$\sqrt{\frac{-50 }{5}}$

$\sqrt{-25}$

$\sqrt{-25}=\sqrt{25}\times \sqrt{-1}$

$\sqrt{-25}=5\times i$

$\sqrt{-25}=5i$

Part C

We want to simplify:

$i^{22}$

We rewrite in terms of $i^2$

$i^{22}=(i^2)^{11}$

$i^{22}=(-1)^{11}$

$i^{22}=-11$

5 0

3 years ago

What is the formula to finding the surface area of a triangular prism?

goblinko [34]

Answer:

A=BxH 1/2

Step-by-step explanation:

6 0

3 years ago

HELP PLEASE,,ANSWER FAST<br> what is 116,166 / 3,600 ?? <br> PLS ANSWER

shepuryov [24]

Answer:

32.2683333333

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Find the slope of the line containing the following two points: (1/10,-1) and (-1/5,-1/5)

Bas_tet [7]

Answer: -2 2/3

Step-by-step explanation: ok so use the slope formula

y2-y1 divided by x2-x1

so then we plug in the numbers

(1/10, -1) and (-1/5,-1/5)

the y corrdinates are (-1/5-(-1) and the x corrdinates are (-1/5-1/10)

were goning get y= 4/3 and x=-3/10 and final answer is -2 2/3

I hope this is right and helps xD

6 0

3 years ago

Read 2 more answers