If x=girls,
then we have 3x boys.
We know that all children are boys+girls, so x+3x, which is 4x and 4x is 48, so one x is 12.
So there are 12 girls and 36 boys.
Answer: 24
Label the time slots as A,B,C,D
For time slot A, he has 4 candidates to pick from. Then for time slot B he has 3 choices left (he doesn't want to interview the same person again), and C has 2 choices, with D having just one choice. Effectively we start at 4 and count our way down to 1. We will multiply these values out.
Overall, Bob has 4*3*2*1 = 24 different ways to arrange the candidate interviews. This is known as a permutation because order matters.
Answer:
Step-by-step explanation:
x
−
5
=
−
3
3
x
=
4
−
x
3
y
+
5
+
2
+
y=
2
y
+
4
Answer:
true
Step-by-step explanation:
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