Two angles are supplementary. They have measures of (7x + 2)° and (3x - 2)° , respectively. What is the value of x?
2 Answers
Mar 3, 2018
Explanation:
Supplementary angles sum to
Therefore:
Hence,
Mar 3, 2018
Explanation:
#• " Supplementary angles sum to "180^@#
#rArr7xcancel(+2)+3xcancel(-2)=180#
#rArr10x=180#
#"divide both sides by 10"#
#(cancel(10) x)/cancel(10)=180/10#
#rArrx=18#
#"thus the measure of the 2 angles are"#
#7x+2=(7xx18)+2=126+2=128^@#
#3x-2=(3xx18)-2=54-2=52^@#
#"and "128^@+52^@=180^@#