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LørdySmårt1SS

Questions (68)

8x^2 - 22x - 408 = 0.
1. 1 answer
2. 48 views
Construct the equation whose roots are 34 and -12Question 10 Select one: 8x2-2x-3=0 8x2+2x-3=0 8x2-2x+3=0 8x2+2x+3=0
1. 1 answer
2. 91 views
If z3=3+2i and z4=4+3i. Then, z3 z4 isQuestion 9 Select one: 6-17i 7+17i 5+16i 6+17i
1. 1 answer
2. 48 views
Simplify i55
1. 1 answer
2. 33 views
The equation of the circle with center 2,-3 and radius 4 isQuestion 7 Select one: y2+x2-4x-6y-3=0 y2+x2-4x+6y-3=0
1. 1 answer
2. 34 views
If z7=4-3i, thenz7 isQuestion 6 Select one: 5 -7 7 -5
1. 1 answer
2. 55 views
The radius of a circle y2+x2-14x-8y+56=0 isQuestion 5 Select one: -4 -3 3 4
1. 1 answer
2. 37 views
A ________ variable is of the form x+iy, where x and y are real numbers.Question 4 Select one: irrational Integer real complex
1. 1 answer
2. 58 views
a+iba-ib=a2+b2, where i2=?Question 3 Select one: +ve -1 0 1
1. 1 answer
2. 42 views
Given that z1=3+2i and z2=4+3i then z1- z2.Question 2 Select one: 1-i -1 -1-i i
1. 1 answer
2. 43 views
Suppose α and β are the roots of an equation:2x2+3x-1=0, then the product of root of the equation isQuestion 1 Select one:
1. 1 answer
2. 46 views
The sum of the first n ______ numbers is given by 1+2+3+…+n=n(n+1)2Question 10 Select one: Rational Integer Complex Natural
1. 1 answer
2. 48 views
An Arithmetic sequence whose first term is 102 and common difference is -3 has its 7th term as _______.
1. 1 answer
2. 57 views
Which is the correct solution of x2+7x+12=0?Question 8 Select one: -6 and-2 -4 and-3 -6 and-1 -5 and-2
1. 1 answer
2. 42 views
The equation:x2-4x+5=0 has _____ roots.
1. 1 answer
2. 29 views
Assignment 2 (TMA2)Question 6 Not yet answered Marked out of 1.00 Flag question Question text If the first term of an A.P is 67
1. 1 answer
2. 100 views
Simplify 3-4i1-2iQuestion 5 Select one: 2i 1-2i -1-2i -1+2i
1. 1 answer
2. 39 views
Suppose α and β are the roots of an equation:ax2+bx+c=0. Then, -ba is the _______ of roots.Question 4 Select one: Sum product
1. 1 answer
2. 73 views
Given the sequence 14,18,116,…, then r is _____.Question 3 Select one:
1. 1 answer
2. 44 views
A/An ______ is a sequence in which each successive terms of the sequence are in equal ratio.
1. 1 answer
2. 62 views
Side panelNOUN Tutor Marked Assignment 2 (TMA2) Question 1 Not yet answered Marked out of 1.00 Flag question Question text A/an
1. 1 answer
2. 86 views
The _____ value of a real number c is given byc, if c>0c, if c<0 .Question 10 Select one: Incremental Difference Absolute True
1. 1 answer
2. 45 views
Suppose α and β are the roots of an equation:2x2+3x-1=0, then the product of root of the equation isQuestion 9 Select one:
1. 1 answer
2. 50 views
Every real number can be represented by a _______ decimal.Question 8 Select one: Terminating Mantissa Non-terminating Fractional
1. 1 answer
2. 58 views
The set of all real numbers EXCEPT, _____ numbers are of utmost importance in real analysis.Question 7 Select one: Natural
1. 1 answer
2. 99 views
B1=m/2<m<5 is a/an ________ interval.Question 6 Select one: Closed-open Open-closed Open Closed
1. 1 answer
2. 71 views
If = 14,700,-473,4644,84 . Then, Z is ____.Question 5 Select one: Bounded Natural Unbounded Closed
1. 1 answer
2. 41 views
If = 14,700,-473,4644,84 . Then, Z is ____.
1. 1 answer
2. 49 views
y=y/y≤4 is _____ interval
1. 1 answer
2. 38 views
A set of the form y=y/y≤4 is of ______intervals.
1. 1 answer
2. 54 views
Given that Z=…,-3,-2,-1,0,1,…, the elements of Z can also be called _____ numbers.
1. 1 answer
2. 38 views
Find the focus of the parabola equation y2+36=0 is
1. 1 answer
2. 45 views
Find the centre of the circle, if the equation of the circle is given x2+y2+2x-6y-15=0. The center is
1. 1 answer
2. 47 views
The equation of the parabola having vertex (0,0) along the x-axis and passing through(2,-1) is
1. 1 answer
2. 78 views
y = (5/8)x + 21/8
1. 1 answer
2. 38 views
The equation of the tangent to the circle x2+y2-3x+4y=15 at the point (-1,2)
1. 1 answer
2. 41 views
y=-7.5
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2. 40 views
y = -sqrt(30)
1. 1 answer
2. 34 views
What is the equation of the directrix of the parabola whose equation is x2-30y=0 ?
1. 1 answer
2. 34 views
The minor axis of an ellipse 9x2+4y2=36 is
1. 1 answer
2. 57 views
m2-m11+m2m1
1. 1 answer
2. 36 views
m2-m1m2m1
1. 1 answer
2. 44 views
If C=3,6 and D=4,8. The coordinate of the point of CD is
1. 1 answer
2. 44 views
A straight line has a gradient of 53 and its passes through the point (1,3), It’s intercept on the y-axis is
1. 1 answer
2. 80 views
The acute angle between two parallel lines in a plane isQuestion 5 Select one: m2+m11-m2m1 m2-m1m2m1 m2-m11+m2m1 m2+m11+m2m1
1. 1 answer
2. 48 views
The distance between the points A=(4,3) and B=(6,5) is
1. 1 answer
2. 37 views
a→=5i+7j and b→=13i+17j then the evaluation of a→×b→ is
1. 1 answer
2. 48 views
Suppose a→=2i+4j+3k and b→=i+5j-2k, then the vector product is ________
1. 1 answer
2. 54 views
If m→=3i+4j+5k and n→=2i+j+7k then the evaluation of m→∙n→ is ______.
1. 1 answer
2. 59 views
AB→+BC→+CD→+DE→+EF→
1. 1 answer
2. 35 views
Given that PQ→=-i+2j-2k, the magnitude of PQ→ is
1. 1 answer
2. 42 views
If a→=i+j-2k then the direction cosines are______.
1. 1 answer
2. 52 views
Find the temperature at which the root-mean-square speed of oxygen molecules would have the value of 640 ms-1 [1 kilomole of
1. 1 answer
2. 67 views
Compute the altitude above the earth's surface at which the acceleration due to gravity would be 4.9 ms-2? [Assume the mean
1. 1 answer
2. 105 views
variable force given as F→=2yi^+7xj^ moves a particle along a parabolic given as y=3x2 from the origin (0, 0) to a point (3,
1. 1 answer
2. 201 views
A ball of mass 50 g tied to the end of a 50 cm light and inextensible string is whirled around in a vertical circle. Find the
1. 1 answer
2. 96 views
Calculate the Young’s modulus for the wire of cross-sectional area 6×10-5 m2 and length 50 cm which stretches by 0.2 mm under
1. 1 answer
2. 104 views
Consider 40 N-force applied at an angle of 37° above the horizontal which pulls a 5-kg box on a horizontal floor. The
1. 1 answer
2. 67 views
Consider a block of mass 2 kg connected to a freely hanging block of mass 4 kg by a light and inextensible string which passes
1. 1 answer
2. 107 views
An 80N-force extends a spring of natural length 8m by 0.4m what will be the length of the spring when the applied force is 100N?
1. 1 answer
2. 80 views
Find out how much heat is needed to be supplied to a gas at a pressure of 1.25×105 Pa, such that the pressure increases by 25
1. 1 answer
2. 66 views
Which of these is correct about viscosity?Question 10 Select one: both viscous force and upthrust act upwards it increases with
1. 1 answer
2. 62 views
A string of natural length L extends to a new length L' under tensile force F. If Hooke’s law applies, the work done in
1. 1 answer
2. 88 views
Consider a stationary observer at a railway station who sees a passenger in a railway coach that is in motion at constant speed
1. 1 answer
2. 83 views
Consider the junctions of two dissimilar metals which are maintained at different temperatures. An electromotive force is set up
1. 1 answer
2. 79 views
The mass of ice needed to cool 60 g of water from 43 °C to 20 °C is _____? [Take the specific heat capacity of water as 4200
1. 1 answer
2. 96 views
What is the temperature at which the Celsius and the Fahrenheit temperature scales record the same reading?
1. 1 answer
2. 63 views
One end of a cylindrical glass rod of refractive index 1.5 is a hemispherical surface of radius of curvature 20 mm. An object is
1. 1 answer
2. 321 views

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