A) 18 sides
B)160 degrees
C) 2880 degrees
Answer:
You take how much it cost by 20 percent and that's how much their tip is
Step-by-step explanation:
7.12
A line segment is represented (written) using letters for the start point and the end point, as in QR: QR is the line segment connecting Q to R. This is the most common case.
Expecially when we're not talking about points on a given line, a line can be refered to by any arbitrary name, such as "line f."
So 1 nickle=5 cents
1 quarter=25 sents
q=number of quarters
n=number of nickles so
total is
q+n=20
5n+25q=400 (since 100 cents=1 dollar and 4 dollares=400 cents)
SO THE 2 EQUATIONS WOULD BE
n+q=20
5n+25q=400
so q+n=20
subtract q from both sides
n=20-q
subsitute 20-q for n in the second equation
5(20-q)+25q=400
distribute
100-5q+25q=400
add like terms
100+20q=400
subtract 100 from both sides
20q=300
divide both sides by 20
q=15
thhere are 15 quarters
subsitute 15 for q in first equation
15+n=20
subtract 15 from both sides
n=5
5 nickles
15 quarters
The answer is <span>768331/</span>76964765
