A student solved s system of equations by elimination. Describe and correct the error made in the part of the solution shown.

5x+4y - x3→15x+12y=6

3x+3y - x4→12x+12y=-3

3x+0=9

x=3

If the area of a square is 29 square inches, estimate the length of each side of the square to the nearest whole number

Which of the following is the best term for the type of experiment described below? 50 people are randomly selected to participate in a clinical drug trials in which one half will receive the actual drug and the other half will receive a placebo.

The football fields at three different schools were measured, and it was found that their perimeters were 320 m, 360 m, and 400 m.

A tortoise moves at approximately 0.2 mph. How far would a tortoise move in half a day?

What is 8 (u+1.5) - 7u=4.9

Find the y-intercept of the function. y = 6^x

Vector u is represented by the directed line segment RS and vector v is represented by the directed line segment OP. if R = (8,-2), S = (11,-6), O = (-3,-9), and P = (0,-13), are u and v equal?

2x + 3y = - 5 y = 3x - 9 Use substitution to solve the system.

Karen works for 85 hours throughout a two-week period. She earns $1,891.25 throughout this period. How much does Karen earn for 8 hours of work?

What is 15.06 rounded to the nearest tenth? 15.0 15.1 15.6 16.1