3 years ago

How do you describe the sum of two rays for geometry?

1 answer:

3 0

To find the sum of an infinite geometric series having ratios with an absolute value less than one, use the formula, S=a11−r, where a1 is the first term and r is the common ratio.

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3 years ago

H e l p m e p l e a s e

photoshop1234 [79]

Answer:

EcD= 52 DCB=128

Step-by-step explanation:

First, let's find out what x equals and what (x+11) equals

$(x+11)+(3x+5)=180\\4x+16=180\\4x=164\\x=41$

And therefore...

$x+11=52$

Now angle ecd is a vertical angle we just found.

So angle ECD= 52 degrees

And agles ECD and DCD and supplimntary

$52+?=180\\DCB=128$

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2 years ago

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3 years ago

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3 years ago

What is eight divided by one and 4 fifths

lakkis [162]

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