Answer:
check.
Step-by-step explanation:
I did the table in the picture below. To understand it you only need to know that the ^ only is true when both propositions (left and right) are true.
Answer:
Step-by-step explanation:
lengths of sides: 2x, 5x, 7x
2x+5x+7x = 182
x = 13
length of longest side = 7x = 91 m
Answer:
im going with number 3 sorry if im wrong
Step-by-step explanation:
Answer:
53.2 kg
Step-by-step explanation:
Let E represent Esther's weight. Then Henry's weight is E/2, and David's weight is E-5.2. Their average weight is ...
((E-5.2) + E + (E/2))/3 = 42.6
2.5E -5.2 = 127.8 . . . . . . . . . . multiply by 3, simplify
2.5E = 133 . . . . . . . . . . . . . . . . add 5.2
E = 133/2.5 = 53.2 . . . . kg
Esther's weight is 53.2 kg.
