Is 78 degrees the correct answer?

Mathematics

2 answers:

Zepler [3.9K]3 years ago

8 0

We have 2 intersecting chords so:
Whenever 2 chords intersect,
Angle AED = Angle BEC = 66 degrees
66 degrees = .5 * (arc AD + Arc BC)
66 degrees = .5 * (arc AD + Arc BC)
66 degrees = .5 * (54 + Arc BC)
66 degrees -27 = .5 Arc BC
39 degrees = .5 Arc BC
Arc BC = 78 degrees
So, you are correct Ranya2

Source:
http://www.1728.org/circangl.htm

kipiarov [429]3 years ago

3 0

Yes as long as the sum of all the numbers equals 360°

You might be interested in

Mark 4/9 and -7/9 on a number line.

stira [4]

Where’s the mf number line

3 0

3 years ago

Read 2 more answers

A toy company intends to ship out its entire stock of 10,254 toy trucks, and three times as many toy cars. If each box holds 35

guapka [62]

10,254 toy trucks and 3*10,254=30,762 cars in total.
10,254/35=292 full boxes and 34 remaining ones.
30,762/35=878 full boxes with 32 trucks remaining.
And if each box can contain both types at once then the total 41,016 divided by 35 gives us 1171 full boxes and only 31 remaining toys.
Hope could help!

3 0

3 years ago

7x + 8y = 25 9x + 10y =35 elimination method please

djverab [1.8K]

$7x +8y = 25 ~~~....(i)\\\\9x +10y = 35~~~ ....(ii)\\\\\text{Multiply equation (ii) by}~ \dfrac 79 ~ \text{and do (ii) - (i):}\\\\\dfrac 79 (9x +10y) - (7x +8y) = \dfrac 79 (35) - 25\\\\\\\implies 7x +\dfrac{70y}9 - 7x -8y = \dfrac{245}9 -25\\\\\\\implies - \dfrac{2y}9 = \dfrac{20}9\\\\\\\implies -2y =20\\\\\implies y =-10\\\\\text{Substitute}~ y = -10~ \text{in equation (i):}\\\\\\7x +8(-10) = 25\\\\\implies 7x = 25 +80\\\\\implies 7x = 105 \\\\\implies x =15\\\\$