Please help me by checking the following answers for me.
3. A student is attempting to solve the equation below for the variable x. Which of the statements below best applies to the mathematical work shown?
Given √(4x-6)=12, I square both sides, so (√4x)^2-6=〖12〗^2, or 4x -6 = 144. I can then solve for x, yielding x = 37 1/2 as my final answer.
A. The student did not correctly square both sides of the equation. - (This is my second answer.)
B. The student did not properly isolate the variable after squaring both sides of the equation.
C. The student omitted a negative solution to the equation.
D. The mathematical work is correct. - (I know it is not this because I got it wrong.)
4. Solve for x.
〖5x〗^2+3=-122
A. No solution. - (This is my second answer.)
B. -5 - (I know it is not the answer because I got it wrong.)
C. ±5
D. ±25
9. The acceleration of an object can be described by the equation a= 2d/t^2, where a is acceleration, d is the distance, and t is time. If an object accelerates at a rate of 2 m/s^2 for 10 meters, what is the total time elapsed?
A. 1/10 seconds - (This is my second answer.)
B. √(1/10) seconds
C. √10 seconds
D. 10 seconds - (I know it is not answer because I got it wrong.)
Please check them to see if I am correct. Any help will really be appreciated! :)
1 answer
2 answers