Answer:
x + y = 900
5x + 9y = 6500
400 children
Step-by-step explanation:
Let:
Children = x ; adult = y
x + y = 900 - - - (1)
5x + 9y = 6500 - - - (2)
From (1)
y = 900 - x
Put y = 900 - x in (2)
5x + 9(900 - x) = 6500
5x + 8100 - 9x = 6500
-4x = 6500 - 8100
-4x = - 1600
x = 1600 / 4
x = 400
Answer:
<h2> Combination</h2>
Step-by-step explanation:
In this case the order of selection does not matter since we are concerned in the number of ways possible a set of students (5) can be grouped for a project, we are going to be using combination technique
In permutation the order of selection matters hence will not give the desired result
Answer:
Im not quite sure but probably 30-40% at the best?
Step-by-step explanation:
Answer:
87.4
Step-by-step explanation:
Recall, that the average is simply the sum of all the scores divided by the number of individual scores
in this case,
the sum of scores = 87+94+76+86+94=437
the number of individual scores = 5
average = sum of scores / number of individual scores
= 437 ÷ 5
= 87.4
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❖ 20% as as a fraction in lowest terms is
Percents are out of 100% so write 20% out of 100% as a fraction:
Both the numerator and denominator can be divided by 20 so once divided, you get
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