Answer:
140
Step-by-step explanation:
1 and 3 are vertical angles meaning they are equal. 4 and 3 make a straight angle. A straight angle is 180.
180-140=40
2 and 4 are straight angles so should be equal.
1=140
2=40
3=140
4=40
(x+20)/2 = 3x
x+20 = 6x
6x - x = 20
5x = 20
x = 4
This is the concept of transformation, ΔHJK=ΔLMN, from the diagram:
∠H=∠L
∠K=∠N
∠M=∠J
In order to map ΔHJK to ΔLMN, we need to translate K to N and rotate about K until HK lies on the same line containing LN.
A,C,D
"B" is definitely not the answer because the fraction isn't negative but the decimal is negative which isn't right.
240 divided by 6 is 40. 40 multiplied by 5 is 200.