-3x-3   Express in only positive exponent;   Remember x-1 = 1/x   so x-3 = 1/x3   so now sub x-3 in your equation   -3(1/x3)   -3/x3

50% of what number of salads is 10   This can be  rewritten as;   50% of x = 10   50/100 * x = 10   1/2 * x = 10   x/2 = 10   cross multiply;   x = 10 * 2   x = 20

Well if you're using the same kind of keyboard format as my laptop where the equals to (=) and addition (+) signs are toggled by the same key, the equation would then have to be;   (x-5)/(-2) = (x+1)/(-3)   we'd cross multiply   (x-5)(-3) = (x+1)(-2)   (-3x...

Cost = \$70; Selling price = \$182. a. Find the markup. b. Find the rate of markup based on cost.   Solution:   a) Markup price = Selling price - Actual price         Markup price = \$182 - \$70        ...

The two sides measure 33 inches and 56 inches. What should the measure of the hypotenuse be in order for this to be a right ?   Using Pythagoras theorem = a2 = b2 + c2   where a = hypotenuse, b & c = sides a = ? b = 33in c = 56in   we'd...

What percent of 20 is 5?   This can be rewritten as;   X% of 20 = 5   which would be;   x / 100 * 20 = 5   20x / 100 = 5   cross multiplying   20x = 100 * 5   20x = 500   x = 500...

240,000,000 × 0.000024               0.005   This can be written as;   24 × 107 × 24 × 10-6          5 × 10-3   24 × 24 × 10(7-6)      ...

If this is what you mean;   A + B + C = AB   C = AB - A - B   But if it is as is;   A + B + C + AB   A + B + C + AB = 0   A + B + C = - AB   C = - AB - A - B   which...

- 6 - 2(3x - 18) = 18   Using BODMAS   B - Bracket O - Order of D - Division M - Multiplication A - Addition S - Subtraction   we'll have to solve the brackets first.   - 6 - 2(3x - 18) = 18   - 6 - 6x + 36...

Simple Interest (I) =  Principle * Rate * Time   so I = PRT   P = \$47300 R = 3% = 0.03 T = 4months = 0.33years   so Assuming its per year after 4month   I = (47300)(0.03)(0.333333)   I = 472.999527   I...

Vertical line through the point (3, 7)   Recall the equation for every vertical line is the same which is represented as;                             ...

Length of train = 240m Speed of train = 20mps Time taken = 60 sec Distance travelled (length of tunnel) = Y   Speed = Distance / time   Distance = Speed * Time   In this case, we'd minus the length of the train too   So, Distance =...

-5n + 6 = 5n - 4   Bring like terms together;   -5n - 5n = -4 - 6   -10n = -10   divide both sides by -10 to find n   -10n / -10 = -10 / -10   n = 1

Total students = 626 Student Opposing = 292   we'll solve this as a ratio to find out how it pens down;   626 : 292   2.143 : 1   ≅ 2 : 1   so from this, 1 out of every 3 student opposed or would oppose the legalization of marijuana...

So you are given; √[(x2+y2)=4]   we'll break them down to various individual components;   √x2 + √y2 = √4   the squares cancel out the square roots and you find the square root of 4   x + y = 2       So...