13
24
12
11
Correct answer is C
2√2x+1 = 32
2√2x+1 = 25
√2x + 1 = 5
square both sides
2x + 1 = 52
2x + 1 = 25
2x = 25 - 1
2x = 24
x = 242
x = 12
Three quarters of a number added to two and a half of the number gives 13. Find the number...
What is the probability of having an odd number in a single toss of a fair die? ...
Given that Y is 20cm on a bearing of 300o from x, how far south of y is x?...
A train travels 60km in M minutes. If its average speed is 400km per hour, find the value of M ...
If the angles of quadrilateral are (p + 10)°, (2p - 30)°, (3p + 20)° ...
Evaluate, correct to three decimal place 4.314×0.0000560.0067...
If tan α = 12 and tan β = 13 and both α and β are acute, find tan (α ...
If y = 3 cos 4x, dy/dx equals? ...
What value of g will make the expression 4x2 - 18xy + g a perfect square? ...