How do you find the significant digit of 6.25 times 6.25? this question always gets me.

Δabc is dilated by a scale factor of 3 with the origin as the center of dilation to form δa′b′c′. the slope of is -1.2. the length of is p units, the length of is q units, and the length of is r units. the slope of is . the length of is units.

Solve 2x2 + 8 = 0 by graphing the related function. there are two solutions: . there are no real number solutions. there are two solutions: 2 and -2

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?