Solve the equation. Round to the nearest tenth, if necessary.If an object is thrown upward from the ground with an initial velocity of 80 ft/sec, its height after t sec is given by h = 80t - 16t2. Find the number of seconds before the object hits the ground.
A. 2.5 sec
B. 5 sec
C. 40 sec
D. 64 sec
Answer: B
Mathematics
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Find the perimeter of the figure if 
?
?
A. 36 in.
B. 6 in.
C. 12 in.
D. 24 in.
E. 72 in.
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Divide the polynomial by the monomial.
A. 6x + 9 - 
B. 36x + 54 - 
C. 6x - 2
D. 6x2 + 9x - 
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State the addition property illustrated by the given equation.-156 + 156 = 0
A. Inverse B. Identity C. Commutative D. Associative
Mathematics
Tell what was done to the first equation to get the second equation. x–5 = -2; x=3
A) 5 was subtracted from both sides of the first equation. B) 5 was added to both sides of the first equation. C) Both sides of the first equation were multiplied by 5. D) Both sides of the first equation were divided by 5. E) -5 was added to both sides of the first equation.
Mathematics