Add and subtract the values. Express your answer in scientific notation. (6.15 times 10 Superscript 8 Baseline) minus (2.5 times 10 Superscript 7 Baseline) + (3.4 times 10 Superscript 9 Baseline) 6.24 times 10 Superscript 8 7.05 times 10 Superscript 8 3.99 times 10 Superscript 9 4.04 times 10 Superscript 9

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Which of the statements about the graph of the function y = 2x are true? check all of the boxes that apply. the domain is all real numbers x because the exponent of 2 can be any real number when the x-values increases by 1 unit, the y-value multiplies by 2. the y-intercept is (0, 1). the graph never goes below the x-axis because powers of 2 are never negative. the range is all real numbers.

Which expression is equal to (21)(7)(3x) using the associative property? (21 · 7 · 3)x (7)(21)(3x) 32(7 + 3x) (3x)(7)(21)