Answer:
30
Step-by-step explanation:
Represent
r=number of rabbits
c=number of chickens
1 rabbit=4 feet and 1 head
1 chicen=2 feet and 1 head
rabbits head+chicen heads=72
1r+1c=72
feet=200
4 times r+2 times c=200
4r+2c=200
divide both sides by 2
2r+c=100
we have
r+c=72
2r+c=100
make first equation negative and add to second equation
-r-c=-72
<u>2r+c=100 +
</u>1r+0c=28
r=28
subsitute
r+c=72
28+c=72
subtract 28
c=44
44 chickens and 28 rabits
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Answer:
Compound Interest= $3440
Final Amount= $5440
Step-by-step explanation:
Compound Interest's formula= P(1+r/100)^n
where P is Principal, r is Rate then n is Years
So in this case,,2000(1+.72)^1 = $3440
Hence, Total Amount = Principal+Interest
therefore T.A= $2000+$3440
T.A=$5440
Thanks... Subjected to Review
Answer:
28 feet
Step-by-step explanation:
Since each side length of the square is 1 foot.
Let x represent the length of the small slant side and y represent the length of the long slant side. Hence:
x² = 5² + 1²
x² = 26
x = √26 = 5.1 feet
y² = 6² + 3²
y² = 45
y = 6.7 feet
The perimeter of the figure is the sum of all the sides of the figure, hence:
Perimeter = 11 feet + 4 feet + 5.1 feet + 6.7 feet + 2 feet = 28.8 feet
Therefore the best estimate of the perimeter of the figure below is 28 feet.
Answer:
10/10
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