Answer:
Step-by-step explanation:
1. Since, it is given that ABCD is a parallelogram, therefore opposite angles of parallelogram are equal, hence
∠B=∠D
⇒7x-31=5x+13
⇒2x=44
⇒x=22
Hence, option B is correct.
2. Since, we get x=22, therefore
∠B=7x-31=7(22)-31=154-31=123°
∠B=123°
and ∠D=5x+13=5(22)+13=123°
∠D=123°
Also, ∠A+∠D=180°(corresponding angles)
⇒∠A=180-123
⇒∠A=57°
Now, ∠A=∠C=57°(opposite angles of parallelogram)
thus, Two of the angles measure 57°, and the other two measure 123°.
Therefore, option A is correct.
Answer:
7.5
Step-by-step explanation:
use the formula A=1/2bh
Not my work but found answer key to answer u need.
First we need to know what 25% of 50 dollars is:
25%=25/100
25/100*50=1/4*50=12.5
So now the "off" means that we need to take it off the 50 dolars, so it will be 50-12.5, which is 37.5, and this is the correct answer.
Answer:
b+9=20-12
Step-by-step explanation:
Hopefully this helped, if not HMU and I will try my best to get you a better answer!