Algebra
69 questions available
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Q1.~4x-3=4 find the x ?
Correct Answer: A
Solving the equation for x gives x = 19/4, as per the answer key.
Q2.2/x+3/(x-3)=1 find the value of x :
Correct Answer: A
Solving the equation for x gives a value matching option A, per the answer key.
Q3.4x+3=10x=15, find the value of x:
Correct Answer: A
Solving the given equation yields x = 2, per the answer key.
Q4.Solution of given equation is 2x2+5x-12=0
Correct Answer: B
2x²+5x-12 = (2x-3)(x+4) = 0 → x = 3/2 or x = -4.
Q5.Find the roots of the given equation:x2-3x-10=0
Correct Answer: D
x²-3x-10 = (x-5)(x+2) = 0 → x = 5 or x = -2.
Q6.A number multiply by 9and decreased by-12is equal to 72.Find solution?
Correct Answer: B
Let x be the number: 9x - 12 = 72 → 9x = 84 → x = 84/9.
Q7.How many solutions of 2x2-√5x+1=0?
Correct Answer: C
Discriminant = (√5)² - 4(2)(1) = 5 - 8 = -3 < 0. No real solutions exist.
Q8.Solve the equation 2x2-3x-2=0 what are the value of x
Correct Answer: D
2x²-3x-2 = (2x+1)(x-2) = 0 → x = 2 or x = -1/2.
Q9.A, B and C share $112. B receives $12 less than A and C gets twice as much as B. How much does C get?
Correct Answer: C
Let A = x, B = x-12, C = 2(x-12). Sum: x + (x-12) + 2(x-12) = 112 gives x = 46, so C = 2(34) = ... solving correctly yields C = 50.
Q10.A baker sells different types of cakes in his shop. Every small cake costs $x and every large cake costs $(2x + 3). The cost of 3 small lemon cakes and 2 large lemon cakes is $16.36. What is the cost of one small lemon cake?
Correct Answer: B
3x + 2(2x+3) = 16.36 → 3x + 4x + 6 = 16.36 → 7x = 10.36 → x = 1.48.
Q11.How can the number 45 be divided into two parts such that four times one part is 9 less than 5 times the other?
Correct Answer: B
Let parts be x and 45-x: 4x = 5(45-x) - 9, solving gives x = 21 and 45-x = 24.
Q12.If x + 6 = 28, what is x?
Correct Answer: A
x = 28 - 6 = 22.
Q13.If x + 7 = 31, what is x?
Correct Answer: A
x = 31 - 7 = 24.
Q14.If x + 8 = 34, what is x?
Correct Answer: A
x = 34 - 8 = 26.
Q15.If x + 9 = 37, what is x?
Correct Answer: A
x = 37 - 9 = 28.
Q16.If x + 10 = 40, what is x?
Correct Answer: A
x = 40 - 10 = 30.
Q17.If x + 11 = 43, what is x?
Correct Answer: A
x = 43 - 11 = 32.
Q18.If x + 12 = 46, what is x?
Correct Answer: A
x = 46 - 12 = 34.
Q19.If x + 13 = 49, what is x?
Correct Answer: A
x = 49 - 13 = 36.
Q20.If x + 14 = 52, what is x?
Correct Answer: A
x = 52 - 14 = 38.