Question

http://prntscr.com/o01ijl

Answer 1

@Narad

Answer 2

This is the same angle

angle ACB = mAB

You can convert the angle to radians as

\[=\frac{ \pi }{ 180 }* \thetaº\]

Answer 3

so 102/180?

Answer 4

don't forget to multiply by \[\pi\]

Answer 5

can you show me how the equation would look with the numbers plugged in

Answer 6

\[\frac{ 102 }{ 180 }*\pi\]

Answer 7

okay so the answer is \[\frac{ 17π }{ 30 }\]

Answer 8

thats it?

Answer 9

Yes

Answer 10

okay

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Answer 11

The angle subtended at the center of the circle is =360º

And you have

angle ACB + angle ADB =306º

From this you can calculate angle ADB

Answer 12

so \[\frac{ 360 }{ 180 }*\]

Answer 13

π

Answer 14

first, calculate

360º-306 and then convert to radians

Answer 15

thats 54

Answer 16

Then convert this angle in radians

Answer 17

Have you studied radians?

Answer 18

\[\frac{ 3\Pi }{ 10 }\]

Answer 19

no,
\[\frac{ 54 }{ 180 }*\pi\]

Answer 20

Your answer is correct

Answer 21

Loll yes. okay.

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Answer 22

The angle subtended at the center of a circle by a chord is twice the angle subtended at the cicrcumference of the circle by the same chord.

\[2x= 360 -(x+45)\]

Solve this equation for x?

Answer 23

x=105

Answer 24

Yes

Answer 25

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Answer 26

nº4

The angle subtended by a chord is the same at any point on the circumference.

Therefore,

\[x+2=3x-40\]

Solve this equation for x?

Answer 27

x=21

Answer 28

Yes

Answer 29

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Answer 30

nº5
\[QR= LN\]
\[5x-7=3x+9\]
Solve this equation for x?

Then, calculate
\[5x-7\]

Answer 31

x=8

Answer 32

yes, continue

Answer 33

then 33

Answer 34

yes

Answer 35

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Answer 36

nº6

\[QR= LN\] and
\[OP= VW\]
Therefore,
\[x+y=6\]
and
\[3x-y=10\]
Solve for x and y in the 2 equations?

Answer 37

x=10/3+y/3

y= -10+3x

Answer 38

No, add the 2 equations

Answer 39

10/3+y/3 + -10+3x ?

Answer 40

No, the original equations

Answer 41

x+y=6 + 3x−y=10

Answer 42

Not like that
\[x+y=6\]
\[3x-y=10\]
\[x+3x+y-y=6+10\]

Answer 43

x=4

y=4

Answer 44

ok for x,

Check for y?

Answer 45

still getting 4

Answer 46

no, from the first equation

Answer 47

2

Answer 48

yes, this method of solving simultaneous equation is called
by elimination

Answer 49

got it

so x = 4
and y=2

final?

Answer 50

yes

Answer 51

okay

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Answer 52

nº7
\[QR=LN\]
\[OP=VW\]
\[2x=y+12\]
\[3x=19+y\]
Solve for x and y in the 2 equations?

Answer 53

in the first equation

x=y/2 +6

y= 2x-12

Answer 54

second equation

x= 19/3+y/3

y= 3x-19

Answer 55

then,
y(1st)=y(2nd)

Answer 56

show me how it would look like please?

Answer 57

\[2x-12=3x-19\]

Answer 58

x=7

Answer 59

but we have to find y

Answer 60

yes, now y=?

Answer 61

4?

Answer 62

no,

Answer 63

?

Answer 64

y=2x-12

Answer 65

do we solve 2x-12?

Answer 66

x=7
then y ?

Answer 67

6?

Answer 68

\[y=2*7-12= \]

Answer 69

14

Answer 70

14-12=2

Answer 71

14-12 =?

Answer 72

2

Answer 73

Yes
y=2

Answer 74

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Answer 75

nº8

\[AB=BC\]
\[3x+2= x+12\]
Solve for x?

Answer 76

x=5

Answer 77

right?

Answer 78

Yes

Answer 79

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Answer 80

Give me some time to think about this?

Answer 81

OOkay

Answer 82

nº9
In the triangle AEB
\[45+70+180-x=180\]
Solve this equation for x?

Answer 83

x=115

Answer 84

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Answer 85

nº10

Let angle A=x

In the triangle ABE
\[x+180-\frac{ 53 }{ 2 }+4=180\]
Solve this equation for x?

Answer 86

x=45/2

Answer 87

right?

Answer 88

Yes

Answer 89

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Answer 90

A parallelogram is a quadrilateral (four sided plane figure) with 2 pairs of parallel sides.

Answer 91

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Answer 92

nº2

A square is regular quadrilateral, it has four equal sides and four equal angles (90º)

Answer 93

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Answer 94

A rectangle is parallelogram where all the angles are right angles, one with adjacent sides of unequal length.