Writing and Solving Equations in Two Variables Answers

The perimeter of the scalene triangle is 54.6 cm.Which equation can be used to find the value of b if side a measures 8.7 cm?

What is the value of x in the equation , when ?

An isosceles triangle in which the two equal sides, labeled x, are longer than side y.

Hanna shops for socks that cost $2.99 for each pair and blouses that cost $12.99 each. Let x represent the number of pairs of socks purchased, and let y represent the number of blouses purchased. Which equation models the purchases she made with $43.92?

What is the value of x in the equation 8x – 2y = 48, when y = 4?

Chen is bringing fruit and veggies to serve at an afternoon meeting. He spends a total of $28.70 on 5 pints of cut veggies and 7 pints of cut fruit. The food cost is modeled by the equation , where v represents the cost of one pint of cut veggies and f represents the cost of one pint of cut fruit. If the cost of each pint of fruit is $2.85, what is the approximate price of a pint of veggies? (Round to the nearest cent, as needed.)

What is the value of a in the equation , when ?

Which shows the correct solution of the equation, when ?

What is the value of x in the equation 2x + 3y = 36, when y = 6?

What is the value of y in the equation 6.4x + 2.8y = 44.4, when x = 3?