On a piece of paper, use a protractor and a ruler to construct △abc with ab=8 cm , m∠a=70° , and m∠b=55° .

what is ac ?

4 cm
6 cm
8 cm
12 cm

What signals you that factoring by grouping is the best method to use when factoring a problem?

20 points 1. your friend, taylor, missed class today and needs some identifying solutions to systems. explain to taylor how to find the solution(s) of any system using its graph. 2. taylor graphs the system below on her graphing calculator and decides that f(x)=g(x) at x=0, x=1, and x=3. provide taylor some feedback that explains which part of her answer is incorrect and why it is incorrect. f(x)=2x+1 g(x)=2x^2+1

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i