Algebra

Q41.If x + 13 = 49, what is x?

Q42.If x + 14 = 52, what is x?

Q43.If x + 15 = 55, what is x?

Q44.What is k, given that 27^k = 9.

Q45.Given; x^2 - 11x + 10 = 0, then x is:

Q46.Total cost of 5 markers and 1 pencil is Rs.245 and total cost of 3 markers and 3 pencils is Rs. 327. What is the cost of one marker?

Q47.What integer values can n have, given the inequality, -7 < 4n <= 8?

Q48.Find the value of a^3 + b^3, when a+b=5 and ab=6.

Q49.When the equation, y = x^2 + 8x - 5 is written in the form = (x + a)^2 + b, then a is:

Q50.Find the value of x, when A = (2pi + y)x^2, where A=36 and y=2.77

Q51.At a football match, the price of child ticket is Rs.240 less than the adult ticket. There are 18,500 adults and 2500 children attending the match. Total amount paid for tickets is Rs.41,400,000. What is the price of one adult ticket?

Q52.The line y=-2x-2 is perpendicular to line I. If these two lines have the same y-intercept , which of the following could be the equation of line I:

Q53.(0.49) x (0.343) + (0.2401)4 x = (70 37 + 100)?+

Q54.Find the value of x and y: 2x + y = 20 6x - 5y = 12

Q55.H = 100 - 4t The equation above can be used to model the number of hours h until a gallon of milk held at a temperature of t, in degrees Celsius, goes sour. Based on the model, which of the following is the best interpretation of the number 4 in the equation?

Q56.x+7=19 then x=?

Q57.Simplify the equation: 5+2 x 6÷3(2)=?

Q58.If, x-y=6 and x + y = 16, then

Q59.If x=3 then x3=?

Q60.When the equation, y = x^2 + 8x - 5 is written in the form = (x+a)^2 + b, then a is: