Decide whether the given number is a solution of the given equation.Is 18 a solution of 4c + 5 - 3c = -20+ 7 ?

A. Yes
B. No

Answer: B

Mathematics

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Find dy/dt.y = t9(t4 + 2)5

A. 9t8(t4 + 2)4(20t4 + 2) B. t8(t4 + 2)4(29t4 + 18) C. t9(t4 + 2)4(29t3 + 18) D. 180t34(t4 + 2)4

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Add. Do not use a number line except as a check.-9 +  + 

A. - 
B. - 10
C. -82
D. - 

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3T = ? mL

A. 30mL B. 45mL C. 20mL D. 15mL

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15x2 - 18x + 10x - 12

A. (3x - 2)(5x + 6) B. (15x + 2)(x - 6) C. (3x + 2)(5x - 6) D. (15x - 2)(x + 6)

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Mathematics