Let dimes = d and quarters =q
D + q = 50
D= 50-q
0.10d + 0.25Q = 7.70
Replace d with 50-q:
0.10(50-q) + 0.25q = 7.70
Simplify:
5 -0.10q + 0.25q = 7.70
5 + 0.15q = 7.70
Subtract 5 from both sides:
0.15q = 2.70
Divide both sides by 0.15:
Q = 2.70 / 0.15
Q = 18
D = 50-18 = 32
There are 32 dimes and 18 quarters
M would have a new coordinate of (4,5)
Answer:
Length of the base=10
Width of the base=50
Step-by-step explanation:
Length of the base=80/8=10
Width of the base= 6.25*8=50
Answer: x=316 and y=41
Step-by-step explanation:
1. x+y=357
2. x-y=41
3. x+y=357
<u>x-y=41</u>
x=316 y= 41
Answer:
7×7=49
Step-by-step explanation:
Is means equals and times means multiply
7×7=49
True
7−7=49
7-7=0 False
7+7=49
7+7 =14 False
49÷7=7
True but this is not the equation described above
7×7=48
49False
