Answer:
r=20
Step-by-step explanation:
since the angle and sum of a straight line is equal to 180, you structure an equation:
180=105+(4r-5)
solve for r
180=100+4r
80=4r
20=r
check answer
4r-5 4(20)-5
80-5
75+105=180
Answer:
We know that 50% of 42 will be = 21
- i.e. 50% of 42 = 50/100 = 21
The correct answer should be: 42 divided by 2
Step-by-step explanation:
We know that 50% of 42 will be = 21
- i.e. 50% of 42 = 50/100 = 21
Also, when we divide 42 by 2, we get the answer 21.
Therefore, the correct answer should be: 42 divided by 2
