Complete.7 hr = ___ sec
A. 420
B. 25,200
C. 42,000
D. 2520
Answer: B
Mathematics
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Find a decimal approximation for the fraction or mixed number, rounded to the given place value. 
; hundredths
A. 0.18 B. 0.19 C. 0.20 D. 0.17
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Determine whether the equation in one variable is linear.x - 4 = 7
A. linear B. not linear
Mathematics
Solve by elimination and check.3x + y = 32x - 2y = -4
A. (- 
, 
)
B. No solution
C. (
, 
)
D. (
, 
)
Mathematics
Solve the quadratic equation.x2 + 3x - 70 = 0
A. {-10, 1} B. {7, 10} C. {-10, 7} D. {-7, 10}
Mathematics