All categories

3 years ago

In the circle above, Line EF and CD intersect at G. Determine the measure of arc DE.

Mathematics

1 answer:

Aliun [14]3 years ago

6 0

Answer:

100

Step-by-step explanation:

It is a rule that for two opposite arcs, with intersecting lines, between them, the average of the arcs is equivalent to the inside angle. Given this, we can say that:

(CF + ED)/2 = angle G

plug values in

(12x+9x+10)/2 = 110

multiply both sides by 2

21x + 10 = 220

subtract 10 from both sides

21x = 210

divide both sides by 21

x=10

Plug this into DE

10*9+10 = 100

You might be interested in

Which espression is equivalent to 7^(-2)*7^(6)

valina [46]

Answer: it’s A and D

Step-by-step explanation:

8 0

3 years ago

What is these in simplest form a) 2a + 4 + 5a + 8 = b) -2b – 7 + 3b – 8 =

iren [92.7K]

Answer:

a ) 7a + 12

b) b - 15

Step-by-step explanation:

a)2a+5a +8+8

= 7a + 12

b) b - 7 - 8

= b-15

6 0

3 years ago

20 POINTS!!!

Inga [223]

Step-by-step explanation:

I think option A is the correct answer

Because it is in ascending order

4 0

3 years ago

Read 2 more answers

Which of the following statements are the same? (A) x -= x + 4 (B) x = x + 4 - x (C) x = x - (x + 4) (A) and (B) are the same (A

Nesterboy [21]

Answer: (A) and (B) are the same

Step-by-step explanation:

for (A)

x-=x+4

x=x-(x+4)

x=x-x-4

x=4

for (B)

x=x+4-x

x=4

for (C)

x=x-(x+4)

x=x-x-4

x=-4

so (A) and (B) are the same because the value of their x is +4

5 0

3 years ago

Which mathematical property is demonstrated below? 3 + 0 = 3

Alik [6]

Answer:

<h3>IDENTITY PROPERTY </h3>

<h3>i hope it is helpful plz marks me branily </h3>

8 0

3 years ago

Read 2 more answers