520 prompts matching "Explain-back: equilibrium of a rigid body"
Showing only prompts that state their year. 35 more in this subject don't name one, so choose All years to see them.
Simplifying nested surds
I am in SS 1. I'm going to explain simplifying an expression containing a surd within a su
Logical reasoning puzzle solved using sets
I am in SS 1. I'm going to explain a short logical reasoning puzzle about groups of people
Gradient from a linear equation
I am in SS 1. I'm going to explain finding the gradient and y-intercept of a line directly
Solving simultaneous linear equations by substitution
I am in SS 1. I'm going to explain solving a pair of simultaneous linear equations by the
Solving a word problem using simultaneous equations
I am in SS 1. I'm going to explain a word problem that must be solved by setting up and so
Zero index rule
I am in SS 1. I'm going to explain the zero index rule, showing why any nonzero number rai
Solving index equations with matching bases
I am in SS 1. I'm going to explain solving an index equation by rewriting both sides with
Verifying an index law with numbers
I am in SS 1. I'm going to explain verifying that a^m divided by a^n equals a^(m-n) using
Index expression with three unknown letters
I am in SS 1. I'm going to explain simplifying an expression with three letters and mixed
Adding and subtracting like surds
I am in SS 1. I'm going to explain adding and subtracting surds that share the same irrati
Rationalising a denominator with a surd and integer
I am in SS 1. I'm going to explain rationalising a denominator such as 6 divided by (2 roo
Distinguishing rational and irrational numbers
I am in SS 1. Show me a fully worked Cambridge/Additional Maths style solution to a questi
Rationalising a denominator with three surd terms
I am in SS 1. I'm going to explain rationalising a more unusual denominator involving more
Set-builder notation basics
I am in SS 1. I'm going to explain reading and writing sets using set-builder notation, su
Recurring decimals as an infinite geometric series
I am in SS 1. I'm going to explain how a recurring decimal, such as 0.777..., can be writt
Series exam question with show all working
I am in SS 1. I'm going to explain a full Cambridge/Additional Maths style series question
Common student mistakes with progression formulas
I'm going to explain the most common mistakes SS1 students make when applying the AP and G
WAEC-style past question on coordinate geometry
I am in SS 1. I'm going to explain a complete WAEC Further Mathematics past-paper style co
Full worked exam-style problem combining gradient, distance and midpoint
I am in SS 1. I'm going to explain a single exam-style coordinate geometry question that r
Subtracting two algebraic fractions
I am in SS 1. I'm going to explain subtracting two algebraic fractions with different deno