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Sav [38]
3 years ago
7

Geometry please help

Mathematics
1 answer:
eduard3 years ago
7 0
Answer: (B) 130 cm

Proof: If a chord and a line from the centre meet, they must be perpendicular. The line from the centre to the chord also bisects the chord. If the distance from the centre of the circle to the chord is 52 cm and the distance of half of the chord is 39 cm, then you can work out using Pythagoras' Theorem the distance of the radius.

r² = 52² + 39²
r² = 4225
r = 65

Thus, the diameter is 2r = 130 cm
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How to find the answers ?
maria [59]

AD || BC and BD is the transversal,

Therefore, angle DBC = angle ADB = 42° [alternate angles]

AD || BC and BD is the transversal,

angle BAD + angle ABD + angle DBC = 180° [co-interior angles]

or, 106°+ angle ABD + 42° = 180°

or, 148° + angle ABD = 180°

or, angle ABD = 180°-148° = 32°

Therefore, angle ABC = (32+42)° = 74°

AB||CD and BC is the transversal,

angle ABC + angle BCD = 180° [co-interior angles]

or, 72+2x+12 = 180

or, 84+2x = 180

or, 2x=180-84 = 96

or, x = 48

Answers: a)48°

b)42°

c)72°

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Convertir 675 Faren a Kelvin (Con ecuaciones porfavor)
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Answer:

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$182 at 6% simple interest for 4 years. <br>Find the interest earned on the account​
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Help pleaseeee ASAP just tell me the answer
iragen [17]

HEY MATE YOUR ANSWER IS HERE

★ GIVEN EQUATION ★

X + Y = 4

★ SOLUTION ★

LET VALUE OF X = 0 , 1 , 2 , 3 AND 4

WHEN X = 0

0 + Y = 4

Y = 4

WHEN X = 1

1 + Y = 4

Y = 3

WHEN X = 2

2 + Y = 4

Y = 2

WHEN X = 3

3 + Y = 4

Y = 1

WHEN X = 4

4 + Y = 4

Y = 0

NOW OUR 5 COORDINATES OF LINE X + Y = 4 ARE

A ( 0 , 4)

B ( 1 , 3 )

C ( 2 , 2)

D ( 3 , 1 )

E ( 4 , 0 )

THANKS FOR YOUR QUESTION HOPE THIS HELPS

can i have a brill

thank u

good luck

6 0
3 years ago
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