Sheena received a gift card for $50. she has already used it to buy a lamp for $39.99. the equation 39.99 =50 can be used to find the amount x that is left on the gift card. what is the solution of the equation?

What is the range of the data below? .8090100

The multiplicative property of equality states that for real numbers a, b, c, and d, if a = b and c = d, then ac = bd. true false

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field