Brainscape Maths

Question 1

What is the formula for calculating the gradient of a line?

Answer 1

Difference in Y divided by Difference in X

Question 2

What is the formula for the area of a circle?

Answer 2

π x (r squared)

Question 3

What is the quadratic equation?

Answer 3

x = -b+ or - Square root of (b squared -4ac)

Then divided by 2a

Question 4

What is the formula for the area of a trapezium?

Answer 4

A = a + b, divided by 2, then multiplied by h

Question 5

What is 7.6 x 10 to the power of 7 in a normal number?

Answer 5

76000000

Question 6

What is 7.6 x 10 to the power of -6 in a normal number?

Answer 6

0.0000076

Question 7

What is 1260000000 in standard form?

Answer 7

1.26 x 10 to the power of 9

Question 8

What is 0.0000000126 in standard form?

Answer 8

1.26 x 10 to the power of -8

Question 9

When a positive number is multiplied by a positive number, is the answer positive or negative?

Answer 9

Positive

Question 10

When a negative number is multiplied by a negative number, is the answer positive or negative?

Answer 10

Positive

Question 11

When a positive number is multiplied by a negative number, is the answer positive or negative?

Answer 11

Negative

Question 12

what is the reciprocal of 5?

Answer 12

1 over 5 (one fifth as a fraction)

Question 13

What is 6 to the power of a third?

Answer 13

1 over 216

Question 14

What is nth term of this sequence?

0, 7, 14, 21, 28

Answer 14

7n - 7

Question 15

What is the nth term of this sequence?

-3, -1, 1, 3, 5

Answer 15

2n - 5

Question 16

What is the nth term of this sequence?

1, 10, 25, 46, 73

Answer 16

3n squared - 2

Question 17

Solve the simultaneous equation:
3x - 5y = 10
4x + 5y = 25

Answer 17

x = 5
y = 1

Question 18

Factorise (x squared) , +9x + 18

Answer 18

(x + 3) (x + 6)

Question 19

a = 2 b= 5

What is 5 (a cubed) + (6 cubed +b cubed)

Answer 19

381

Question 20

What is 16454 to the power of 0?

Answer 20

1

Question 21

What is the formula for the volume of a sphere?

Answer 21

V = 4\3 (π x (r cubed))

Question 22

What is the formula for the area of any triangle?

Answer 22

1\2abSinC

Question 23

What is the sine rule?

Answer 23

a\sinA = b/sinB = c\sinC

Question 24

What is the cosine rule?

Answer 24

a squared = (b squared) + (c squared) - 2bcCosA

Question 25

What is the formula for the volume of a cone?

Answer 25

V = 1\3 π ( r squared) h