Answer:
x=10
Step-by-step explanation:
13x-7+7x-13=180
Combine like terms
20x-20 = 180
Add 20 to each side
20x -20+20 = 180+20
20x=200
Divide by 20
20x/20 = 200/20
x = 10
<span>
The matrices cant be multiplied. The number of columns in A is not equal to the number of rows in B.</span>
Number 2 is 100 cm
number 3 the height is equal to 5
NUMBER 4 b is equal to 13
Answer:
its D 103°
Step-by-step explanation:
Sum of a pentagon=540
117+100+115+105+x=540
437+x=540
x=540-437
x=103°