If a + b = -2a+b=−2 and x + y = -2x+y=−2,
what is 4x + 5a + 4y + 5b4x+5a+4y+5b?

Dilations map circles to circles and ellipses to ellipses with the same. true or false

3-12. write each answer with a reasonable number of figures. find the absolute uncertainty and percent relative uncertainty for each answer. (a) [12.41 (±0.09) + 4.16 (±0.01)] x 7.068 2 (±0.000 4) =? (b) [3.26 (±0.10) x 8.47 (±0.05)] - 0.18 (±0.06) =? (c) 6.843 (±0.008) x 104 + [2.09 (±0.04)- 1.63 (±0.01)] =?

Find the value of the variable and the length of each secant segment.