The correct ones are A,B, D&E
To solve this problem you must apply the following proccedure:
1. You have a total of 21 coins, all nickels and dimes. Then:
x:nickels=5 cents
y: dimes=10 cents
x+y=21
2. You have that the total value is $1.70. Then:
5x+10y=170
3. The system of equation is:
x+y=21 (i)
5x+10y=170 (ii)
4. You have:
x+y=21
x=21-y
5(21-y)+10y=170
105-5y+10y=170
y=13 dimes
x+13=21
x=8 nickels
Answer:
173 degrees
Step-by-step explanation:
we know AED + AEB + BEC + CED = 360
AEB = 112
to find BEC, we have B + BCE + BEC = 180 because they form a triangle. so BEC = 180 - B - BCE = 180 - 73 - 79 = 28
to find CED, follow the same steps as BEC: 180 - 37 - 96 = 47
now AED = 360 - AEB - BEC - CED = 360 - 112 - 28 - 47 = 173
Answer:
43.44 for the first one
16 cats from the second one
496 for the third one
Step-by-step explanation:
