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Maths
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Solve 3x - 5 < 16

The first thing you should always do when approaching questions like this is to get the numbers on one side and the letters on the other. This makes the equation simpler and helps you to solve it. By addi...

DS
Answered by Dannielle S. • Maths tutor
16287 Views

How do you find the angle between two lines in three dimensional vector space given two points on line 1 and the vector equation of line 2

  1. Find the direction vector of line 1

  2. Find the scalar product of the direction vectors of lines 1 and 2

  3. Calculate the magnitude of both direction vectors

    MM
    Answered by Mark M. • Maths tutor
    3644 Views

z = 3x + 5y, if x = 7 and z = 41, what is 2y?

z = 3x + 5y 41 = 3(7) +5y 41= 21 + 5y 20 = 5y 4 = y y = 4 2y = 8

HA
Answered by Hannah A. • Maths tutor
4021 Views

How can I solve quadratic equations by completing the square?

When we have a quadratic (ax2 + bx + c = 0) we can "complete the square" to solve for x. For example x2 + 8x + 7 = 0. First look at the x2 + 8x, in particular th...

TB
Answered by Thomas B. • Maths tutor
3649 Views

Write 36% as a fraction in its simplest terms.

36%= 36/100

Divide it by 2, the answer will be 18/50.

It can then be divide by 2 again and getting to the answer of 9/25. 

LY
Answered by Li Ying O. • Maths tutor
14159 Views

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