Joel = j, Mark = m, Sandra = s
j + m + s = 120
m = 3j
j = 1/2 s --> s = 2j
plug in (substitute) each letter to make it in terms of only j: j + m + s = 120
j + 3j + 2j = 120
6j = 120
6j/6 = 120/6
j = 20
now plug in for the j & s equation:
s = 2j = 2(20) = 40
Therefore Sandra has 40 coins!
Answer:
1A) XY
1B) XY
1C) WX/XY
2) WY is the hypotenuse
Step-by-step explanation:
Answer:
13 ounces
Step-by-step explanation:
291/21.5=13.5348837209
