Brainscape Maths Flashcards
What is the formula for calculating the gradient of a line?
Difference in Y divided by Difference in X
What is the formula for the area of a circle?
π x (r squared)
What is the quadratic equation?
x = -b+ or - Square root of (b squared -4ac)
Then divided by 2a
What is the formula for the area of a trapezium?
A = a + b, divided by 2, then multiplied by h
What is 7.6 x 10 to the power of 7 in a normal number?
76000000
What is 7.6 x 10 to the power of -6 in a normal number?
0.0000076
What is 1260000000 in standard form?
1.26 x 10 to the power of 9
What is 0.0000000126 in standard form?
1.26 x 10 to the power of -8
When a positive number is multiplied by a positive number, is the answer positive or negative?
Positive
When a negative number is multiplied by a negative number, is the answer positive or negative?
Positive
When a positive number is multiplied by a negative number, is the answer positive or negative?
Negative
what is the reciprocal of 5?
1 over 5 (one fifth as a fraction)
What is 6 to the power of a third?
1 over 216
What is nth term of this sequence?
0, 7, 14, 21, 28
7n - 7
What is the nth term of this sequence?
-3, -1, 1, 3, 5
2n - 5
What is the nth term of this sequence?
1, 10, 25, 46, 73
3n squared - 2
Solve the simultaneous equation:
3x - 5y = 10
4x + 5y = 25
x = 5 y = 1
Factorise (x squared) , +9x + 18
(x + 3) (x + 6)
a = 2 b= 5
What is 5 (a cubed) + (6 cubed +b cubed)
381
What is 16454 to the power of 0?
1
What is the formula for the volume of a sphere?
V = 4\3 (π x (r cubed))
What is the formula for the area of any triangle?
1\2abSinC
What is the sine rule?
a\sinA = b/sinB = c\sinC
What is the cosine rule?
a squared = (b squared) + (c squared) - 2bcCosA
