ax+2y=5, 3x-6y=20 in the system of equations above, a is a constant. if the system has one solution, which of the following cannot be the value of a...? Mcqs

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ax+2y=5, 3x-6y=20 in the system of equations above, a is a constant. if the system has one solution, which of the following cannot be the value of a...?

(A) -1
(B) 4

(C) 1
(D) -3

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Oscar purchased a new hat that was on sale for $5.06. The original price was $9.20. What percentage discount was the sale price...?

(A) 55%
(B) 41.4%

(C) 45%
(D) 65%

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In a flight of 600 Kms, an aircraft was slowed down due to bad weather and the average speed was reduced by 200 Km/hour and the time of flight increased by 30 minutes. what is the total duration of flight...?

(A) 1 Hour
(B) 2 hours

(C) 3 hours
(D) 4 hours

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If 1< x <2, then find the value of √(x-1)² + √(x-3)²...?

(A) 2
(B) 4

(C) 5
(D) None of these

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Ali deposits an amount of X 65800 to obtain a simple interest at the rate of 14% per annum for 4 years. What total amount will Ali get at the end of 4 years...?

(A) 102648
(B) 115246

(C) 125578
(D) 110324

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Divide 350 into two parts in the way that on exceeds the other by 4:...?

(A) 180, 170
(B) 185, 165

(C) 174, 176
(D) 173, 177

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A Ladder 15 m Long Just Reaches the Top of a Vertical Wall. If the Ladder Makes an Angle of 60° with the Wall, Then the length of the Wall is:...?

(A) 15 √3 m
(B) 152 m

(C) 15/2 m49
(D) 15 √ 7 m

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Julie has a square fence that enclosed her garden. She decided to expand her garden by making each side of the fence 10 percent longer. After this expansion, the area of Julie’s garden will have increased by what percent...?

(A) 20
(B) 21

(C) 23
(D) 25

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A patient requires a 30% decrease in the dosage of his medication. His current dosage is 340 mg. What will his dosage be after the decrease...?

(A) 70
(B) 238

(C) 270
(D) 340

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If 3 ^ [x + 3] + 7 = 250 then x is equal to...?

(A) 5
(B) 3

(C) 2
(D) None of these

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