Express in simplest form: (1/2) - (4-d) / (1/d) + (3/2d)

Solve: 5/7x + 4/3 = - 2/3

When x=8, y=20. Find why when x = 42

Solve the following equation for the variable a 2a+b=c-4d

Initially, $40/%$ of the students at the school dance are girls. Then, $15$ more girls arrive, after which $52/%$ of the students at the dance are girls. How many students are now at the dance after the additional girls arrive?

When you divide a whole number by a decimal less than 1, the quotient is greater than the whole number. Why?

A car needs 54 liter petrol for running 648km how many km will it go with 10 liter petrol

What's the cot (180°) + (cos (180°) / sin (180°))

Who created the universe?

The cross-section of a beehive reveals it is made of regular hexagons. What is the measure of each angle in the regular hexagon?

Sophia walked 6 miles in 90 minutes at bear creek park in euless, texas. if she continues at this rate, use a ratio table to determin how many miles she could walk in 60 minutes