Answer:
Step-by-step explanation:
Her score after the two competitions was 500
hope this answer helps you
Multiply 3x9 and it gives u 27
And -3 plus -9 equal -12
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:
the answer is......
Step-by-step explanation:
f ,c,a