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Solving the system of equations we get x=5 and y=10.5
Step-by-step explanation:
We need to solve the system of equations by substitutions.
The system of equations given are:
Let:
Putting value of y from eq(2) into eq(1)
So, value of x=5
Now putting value of x in eq 1 to find value of y:
So, value of y is 10.5
Solving the system of equations we get x=5 and y=10.5
Keywords: System of equations
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Answer:
50.3 cm³
Step-by-step explanation:
Use the cylinder volume formula:
V = r²h, where r is the radius and h is the height.
Since the radius is half of the diameter, and the cylinder has a diameter of 4 cm, this means the radius is 2 cm.
Plug in the radius and height into the equation:
V = r²h
V = (2²)(4)
V = 16
V = 50.3 cm³