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First, draw a diagram to help visualise the problem.
Next, write out the full sum: x + x + (x+4) + (x+4) = 45
This simplifies to: 2x + 2(x+4) = 45
Which expands to: 2x + 2x + 8 =45
T...

The point P has coordinates (3, 4) The point Q has coordinates (a, b)A line perpendicular to PQ is given by the equation 3x + 2y = 7 Find an ...

(32,000,000)*1.04= 33,280,000= 33,000,000 to the nearest million.

When we solve this, it's going to be the same process as solving 5(x-6) = 20, except at each step we need to think about whether we change the inequality round or keep it the same. There are two ways of d...

√40 + √90

= (√10 x √4 ) + (√10 x √9 )

= 2√10 + 3√10=5√10