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:
there is a 1/4 chance of getting a on the spinner and there is a 50% percent chance of getting less than 4 on the die.
Step-by-step explanation:
because there are 4 spaces and one answer is shown so yeah
Answer:
12 and 12.5
Step-by-step explanation:
Step-by-step explanation:
Reflection on x-axis;
A(4,-5)=A'(4,5)
