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In order to get p on its own, it is necessary to move it over to the right hand side of the equation. When moving something from one side to another, you flip the sign. For example, in this case, it is 8*...

Two equations 1) 5x + y = 21, 2) x - 3y = 9. Eliminate x or y by manipulating equations 1 or 2. Equation 3 = equation 2 x 5 = 5(x-3y) = 5(9) 3) 5x - 15y = 45. Equations 3 & 1 both have 5x's so we can ...

using the Pythagoras formula: a^2 + b^2 = c^2 the longest measurement is always the hypotenuse due to the orientation of a triangle and so c is the hypotenuse leaving the a and b to be the two measuremen...

f(-2) = 3(-2) + (-2)² = -6 + 4 = 2First you need to substitute -2 for each value of x in the function. Then you need to simplify the expression by multiplying -2 by 3 and by squaring -2. (Hint...

We must find a common denominator between the fractions to be able to add them (the bottom numbers must be the same). A common denominator of 5 and 7 is 35. To get to 35 from 5 we multiplied by 7, therefo...