Question Bank / Math / Linear Equations in One Variable
Linear equations in one variable SAT question
Math · Algebra · Medium · Answer it here, explanation included.
The width of a rectangular dance floor is w feet. The length of the floor is 6 feet longer than its width. Which of the following expresses the perimeter, in feet, of the dance floor in terms of w ?
ExplanationShow
Choice B is correct. It is given that the width of the dance floor is w feet. The length is 6 feet longer than the width; therefore, the length of the dance floor is 
. So the perimeter is 
.
Choice A is incorrect because it is the sum of one length and one width, which is only half the perimeter. Choice C is incorrect and may result from using the formula for the area instead of the formula for the perimeter and making a calculation error. Choice D is incorrect because this is the area, not the perimeter, of the dance floor.
Drill this skill on Aceit
Adaptive practice, a daily plan, and score tracking take a free account so we can save your work.
More Linear equations in one variable questions
- A system of equations consists of a quadratic equation and a linear equation. The equations in this system are graphed in the xy-plane above. How many solutions does this system ha
- Which of the following inequalities is equivalent to the inequality above?
- If is a solution to the system of equations above, which of the following could be the value of x ?
- What values satisfy the equation above?
- Hector used a tool called an auger to remove corn from a storage bin at a constant rate. The bin contained 24,000 bushels of corn when Hector began to use the auger. After 5 hours
- x=49 y=x+9 The graphs of the given equations intersect at the point x,y in the xy-plane. What is the value of y ?