How many 1-cent stamps are there in a dozen?
?
__________ stamps
?
Fill in the blank(s) with the appropriate word(s).
12
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Solve the problem.Raul, who is 1.66 m tall, wishes to find the height of a tree with a shadow 32.51 m long. He walks 21.48 m from the base of the tree along the shadow of the tree until his head is in a position where the tip of his shadow exactly overlaps the end of the tree top's shadow. How tall is the tree? Round to the nearest hundredth.
A. 2.76 m B. 4.89 m C. 1.66 m D. 2.51 m
Solve.9n - 6 = 75
A. 76 B. 9 C. 72 D. 14
Solve.The voltage across a resistor is jointly proportional to the resistance of the resistor and the current flowing through the resistor. If the voltage across a resistor is 
for a resistor whose resistance is 
and when the current flowing through the resistor is 
find the voltage across a resistor whose resistance is 
and when the
current flowing through the resistor is 
A. 72 volts
B. 24 volts
C. 32 volts
D. 36 volts
The half-life of uranium-238 is 4.5 billion years. What is the decay rate? As a percent, round to nine decimal places.
What will be an ideal response?