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Recent questions tagged o-level


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What is the probability that of 25 randomly selected students, no two share the same birthday?
1 answer 17 views
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Did climate change cause the dust bowl?
0 answers 39 views
Did climate change cause the dust bowl?Did climate change cause the dust bowl? ...
by MathsGee Platinum
(119,140 points)
asked in Geography & Environment Apr 23
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\(A, B, C\) and \(D\) are points on the circumference of a circle such that \(A B=B C\). \(A F\) is a tangent to the circle through \(A B C D\) at \(A\).

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\(A, B, C\) and \(D\) are points on the circumference of a circle such that \(A B=B C\). \(A F\) is a tangent to the circle through \(A B C D\) at \(A\).

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What is \(12\dfrac{1}{3}\) percent as a fraction?
0 answers 89 views
What is \(12\dfrac{1}{3}\) percent as a fraction?What is \(12\dfrac{1}{3}\) percent as a fraction? ...
by Pieter Gold Status
(31,957 points)
asked in Mathematics Mar 8
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A cup of coffee, cooling off in a room at temperature \(20^{\circ} \mathrm{C}\), has cooling constant \(k=0.09 \mathrm{~min}^{-1} .\)
0 answers 73 views
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The equation of position vs. time for a moving object, in SI units, is as \(x=-t^{2}+6 t-9 .\) Which of the following choices are correct?
1 answer 54 views
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Factorise \(10 x y^2+52 x y\)
0 answers 60 views
Factorise \(10 x y^2+52 x y\)Factorise \(10 x y^2+52 x y\) ...
by MathsGee Platinum
(119,140 points)
asked in Mathematics Jan 24
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Simplify \(\frac{1}{7} \times \frac{9}{16} \times \frac{16}{9} \times \frac{16}{9} \times \frac{9}{16}=\)
1 answer 132 views
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What is a line graph?
0 answers 48 views
What is a line graph?What is a line graph? ...
by MathsGee Platinum
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asked in Physics & Chemistry Jan 3
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Make \(S\) the subject of the relation \[ \mathrm{p}=\mathrm{s}+\frac{\mathrm{sm}^{2}}{\mathrm{nr}} \]
1 answer 77 views
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Factorise completely: \(75 x-12 x^{3}\)
1 answer 70 views
Factorise completely: \(75 x-12 x^{3}\)Factorise completely: \(75 x-12 x^{3}\) ...
by MathsGee Platinum
(119,140 points)
asked in Mathematics Nov 9, 2021
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Factorise completely: \(x-16 x^{3}\)
1 answer 73 views
Factorise completely: \(x-16 x^{3}\)Factorise completely: \(x-16 x^{3}\) ...
by MathsGee Platinum
(119,140 points)
asked in Mathematics Nov 9, 2021
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A map is drawn to a scale of 1:75000. This scale can be expressed as \(1cm\) respresents \(n \mathrm{~km}\). Find \(n\).
0 answers 135 views
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Express 80 as a product of primes.
0 answers 143 views
Express 80 as a product of primes.Express 80 as a product of primes. ...
by Student SIlver Status
(10,904 points)
asked in Mathematics Sep 27, 2021
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Show that \(\overrightarrow{P Q}\) is perpendicular to \(\overrightarrow{R S}\)
1 answer 91 views
Show that \(\overrightarrow{P Q}\) is perpendicular to \(\overrightarrow{R S}\)(a) Given that \(m=(6 i+8 j)\) and \(n=\left(-8 i+\frac{7}{3} j\right)\), find the : (i) magnitudes and direction of \(\mathrm{m}\) and \(\mathrm{n} ; ...
by MathsGee Platinum
(119,140 points)
asked in Mathematics Sep 12, 2021
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What number did she think of?
1 answer 81 views
What number did she think of?Boguslawa thinks of a number. She trebles the number. She then subtracts 8 . Boguslawa's answer is 16 . What number did she think of? ...
by MathsGee Platinum
(119,140 points)
asked in Mathematics Sep 10, 2021
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Suppose the position of an object at time $t$ is given by $f(t)=-49 t^{2} / 10+5 t+10 .$ Find a function giving the speed of the object at time $t .$
1 answer 273 views
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What is a linear equation?
1 answer 71 views
What is a linear equation?What is a linear equation? ...
by Maths Genie Bronze Status
(5,562 points)
asked in Mathematics Aug 9, 2021
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Solve the linear equation: $3(x+2)-2(1-x)=4 x+5$
1 answer 101 views
Solve the linear equation: $3(x+2)-2(1-x)=4 x+5$Solve the linear equation: $3(x+2)-2(1-x)=4 x+5$ ...
by MathsGee Platinum
(119,140 points)
asked in Mathematics Jul 22, 2021
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Solve the linear equation: $-x-7=-3 x-9$
1 answer 96 views
Solve the linear equation: $-x-7=-3 x-9$Solve the linear equation: $-x-7=-3 x-9$ ...
by MathsGee Platinum
(119,140 points)
asked in Mathematics Jul 22, 2021
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Express $b \times b \times b \times b \times b$ in exponential form:
1 answer 171 views
Express $b \times b \times b \times b \times b$ in exponential form:Express $b \times b \times b \times b \times b$ in exponential form: ...
by MathsGee Platinum
(119,140 points)
asked in Mathematics Jun 27, 2021
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$\dfrac{2^{2016}+2^{2017}+2^{2018}+2^{2019}}{2^{2017}+2^{2018}+2^{2019}+2^{2020}}$ is equal to
1 answer 180 views
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$1+\dfrac{1}{2+\dfrac{1}{3+\dfrac{1}{4}}}$ is equal to
1 answer 191 views
$1+\dfrac{1}{2+\dfrac{1}{3+\dfrac{1}{4}}}$ is equal to$1+\dfrac{1}{2+\dfrac{1}{3+\dfrac{1}{4}}}$ is equal to ...
by Edzai Zvobwo Bronze Status
(9,010 points)
asked in Mathematics Jun 26, 2021
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If a taxpayer paid $\$ 28,925.35$ in federal tax, what was her gross annual income for 2011?
0 answers 82 views
If a taxpayer paid $\$ 28,925.35$ in federal tax, what was her gross annual income for 2011?In 2011 , Canadian federal tax rates were $0 \%$ on the first $\$ 10,527$ of gross income earned, $15 \%$ on the next $\$ 31,017,22 \%$ on the next $\ ...
by Maths Genie Bronze Status
(5,562 points)
asked in Mathematics Jun 17, 2021
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Solve the linear equation $\frac{3 m}{4}+2 m=4 m-15$
1 answer 126 views
Solve the linear equation $\frac{3 m}{4}+2 m=4 m-15$Solve the linear equation  $\frac{3 m}{4}+2 m=4 m-15$ ...
by Maths Genie Bronze Status
(5,562 points)
asked in Mathematics Jun 17, 2021
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Solve for $x$: $9^{x+1}=27^{x}$
1 answer 112 views
Solve for $x$: $9^{x+1}=27^{x}$Solve for $x$: $9^{x+1}=27^{x}$ ...
by Student SIlver Status
(10,904 points)
asked in Mathematics Jun 14, 2021
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Express $9^{x-1}+3^{2 x}$ as a single power expression.
1 answer 116 views
Express $9^{x-1}+3^{2 x}$ as a single power expression.Express $9^{x-1}+3^{2 x}$ as a single power expression. ...
by Student SIlver Status
(10,904 points)
asked in Mathematics Jun 14, 2021
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The Indiana State Police wish to estimate the average mph being traveled on the Interstate Highways, which cross the state.
1 answer 85 views
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Solve the quadratic equation $3 x^{2}+2 x-8=0$
1 answer 155 views
Solve the quadratic equation $3 x^{2}+2 x-8=0$Solve the quadratic equation $3 x^{2}+2 x-8=0$ ...
by Maths Genie Bronze Status
(5,562 points)
asked in Mathematics Jun 1, 2021
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A rally driver in a competition is expected to cover a distance of 285 km in five hours. Part of the race track is murram while the rest is under repair.

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Evaluate $p-q$ for the given values. $p=2, q=20$
1 answer 303 views
Evaluate $p-q$ for the given values. $p=2, q=20$Evaluate $p-q$ for the given values. $p=2, q=20$ ...
by MathsGee Platinum
(119,140 points)
asked in Mathematics May 21, 2021
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Sharon weeded $5 / 6$ of her yard in the morning and $1 / 6$ of the yard in the afternoon. What part of the yard did she weed altogether?
1 answer 305 views
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Solve for $k$ in $\sqrt{8 k}=k$
1 answer 109 views
Solve for $k$ in $\sqrt{8 k}=k$Solve for $k$ in $\sqrt{8 k}=k$ ...
by MathsGee Platinum
(119,140 points)
asked in Mathematics May 19, 2021
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Solve simultaneously for the variables
1 answer 88 views
Solve simultaneously for the variablesSolve simultaneously for the variables: $$2 a+3 b-4=0$$ $$b=\frac{1}{2} a^{2}+\frac{1}{2} a-3$$ ...
by MathsGee Platinum
(119,140 points)
asked in Mathematics May 19, 2021
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If the displacement of a particle is zero, then what can we say about its distance covered?
0 answers 180 views
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What is the angle between instantaneous displacement and acceleration during the retarded motion
0 answers 237 views
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A particle moves with uniform velocity. Which of the following statements about the motion of the particle is true.
0 answers 260 views
A particle moves with uniform velocity. Which of the following statements about the motion of the particle is true.A particle moves with uniform velocity. Which of the following statements about the motion of the particle is true. (a) its speed is zero. (b) its ac ...
by MathsGee Platinum
(119,140 points)
asked in Physics & Chemistry May 19, 2021
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The time elapsed is plotted along $\mathrm{X}$ -axis and the acceleration is plotted along the Y-axis. The area between the graph and the X-axis gives...........

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A particle moving with uniform speed can possess:
0 answers 202 views
A particle moving with uniform speed can possess:A particle moving with uniform speed can possess: (a) radial acceleration (b) tangential acceleration (c) both radial and tangential accelerations (d ...
by MathsGee Platinum
(119,140 points)
asked in Physics & Chemistry May 19, 2021
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The slope of the velocity time graph for retarded motion is:
1 answer 279 views
The slope of the velocity time graph for retarded motion is:The slope of the velocity time graph for retarded motion is: (a) Positive (b) negative (c) zero (d) can be +ve, -ve or zero ...
by MathsGee Platinum
(119,140 points)
asked in Physics & Chemistry May 19, 2021
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Which of the following can be zero when the particle is in motion for some time?
1 answer 204 views
Which of the following can be zero when the particle is in motion for some time?Which of the following can be zero when the particle is in motion for some time? (a) Displacement (b) Distance covered (c) speed (d) none of the abov ...
by MathsGee Platinum
(119,140 points)
asked in Physics & Chemistry May 19, 2021
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Which of the following statement is false for motion with uniform velocity
1 answer 389 views
Which of the following statement is false for motion with uniform velocityWhich of the following statement is false for motion with uniform velocity (a) The motion is along a straight line path (b) The motion is always in t ...
by MathsGee Platinum
(119,140 points)
asked in Physics & Chemistry May 19, 2021
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The velocity graph of a motion starting from rest with uniform acceleration is a straight line:
1 answer 512 views
The velocity graph of a motion starting from rest with uniform acceleration is a straight line:The velocity graph of a motion starting from rest with uniform acceleration is a straight line: (a) Parallel to time -axis (b) parallel to velocity a ...
by MathsGee Platinum
(119,140 points)
asked in Physics & Chemistry May 19, 2021
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