Answer:
c 17
Step-by-step explanation:
You make 23 a day plus 3.60 per sale
Income = 23+ 3.6 s
You want to make at least 84
84 ≤ 23+ 3.6 s
Subtract 23 from each side
84 -23 ≤ 23-23 +3.6s
61 ≤ 3.6s
Divide by 3.6 on each side
61/3.6 ≤ 3.6s/3.6
16.94444 ≤ s
You must make more than 16.94444 sales
But you cannot make part of a sale so
You must make at least 17 sales
For number 9, you know that it makes 40 copies every five minutes. All you have to do is divide 40 by 5.
40 ÷ 5 = 8
It makes 8 copies every minute.
Your chart can also help you check your answer. It says that it makes 96 copies every 12 minutes and it makes 104 copies every 13 minutes. So multiply 8 by 12 to check it and 8 by 13.
8 • 12 = 96
8 • 13 = 104
Since those answers match up with the chart, it must be correct.
The photocopier makes 8 copies every minute. Hope that helps!
Your answer should turn out to be C.:angle 2 and angle 5. :D
Distributive property. Multiply both terms within the parentheses by 2.
120 + 64 = 184.
Probability that everyone in the group is a girl is or 0.03 or 3.3%
Step-by-step explanation:
Total Students in class= 10
No of boys = 6
No of girls = 4
If teacher chooses 3 students at random, what is the probability that everyone in the group is a girl?
This is a combination question.
The formula used is:
n=population and k = picks
In our case, n= 10 and k = 3
So, Total combinations:
Combinations of selecting everyone in the group as girl:
So, probability that everyone in the group is a girl
So, probability that everyone in the group is a girl is or 0.03 or 3.3%
Keywords: Probability
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