What does the circuit symbol in the figure mean?
?
?
A. switch
B. battery (or power source)
C. light
Answer: A
Mathematics
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Solve each proportion for the given variable.
= 
A. 2
B. 123
C. 28
D. 21
Mathematics
Write a matrix equation equivalent to the system of equations. 7x + 9y + 2z = 90 4x + 9y + 6z = 62 7x + 3y + 9z = 59
A.
| ? |
= 
B.
=
C.
= 
D.
=
Mathematics
Without actually converting, choose the most reasonable answer.A two-car garage is about __________ wide.
A. 800 m B. 8 m C. 80 m D. 8000 m
Mathematics
Solve the problem. Round to the nearest dollar if needed.To save for retirement, you decide to deposit $2500 into an IRA at the end of each year for the next 35 years. If the interest rate is 9% per year compounded annually, find the value of the IRA after 35 years.
A. $48,535 B. $23,272,500 C. $539,277 D. $492,456
Mathematics