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In-s [12.5K]
3 years ago
10

21. A plumber charges a flat fee plus a cost per hour. Customer 1 is charged $114

Mathematics
2 answers:
gulaghasi [49]3 years ago
5 0

Answer:

B. $254

Step-by-step explanation:

Flat Fee: $30    

Cost per hour: $28

Customer 1: 3(28) + 30 = 114

Customer 2: 5(28) + 30 = 170

Customer 3: 8(28) + 30 = 254

sukhopar [10]3 years ago
4 0
C 284. Nnnnnnnnnn I need to but 25 letters so. Wkjejsjejwnwns
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There are 25 students that would like to go on a field trip, but only 18 may go. How many different combinations of students cou
Naya [18.7K]

480700. The different combinations of students that could go on the trip with a total of 25 student, but only 18 may go, is 480700.

The key to solve this problem is using the combination formula nC_{r}=\frac{n!}{r!(n-r)!}. This mean the number of ways to choose a sample of r elements from a set of n distinct objects where order does not matter and replacements are not allowed.

The total of students is n and the only that 18 students may go is r:

25C_{18}=\frac{25!}{18!(7!)}=480700

6 0
3 years ago
Can someone please tell me what the formula to find area and volume for this would be?
Step2247 [10]
The formula for this is A= a + b/2 x h.
6 0
3 years ago
3,540+6.112× 10 to the power of 3​
Nastasia [14]

Answer:

9652

Step-by-step explanation:

Hope that helps!

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2 years ago
What is it quick. And drop y’all Insta ask more
Tcecarenko [31]

Answer:

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225 m2

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2 years ago
Decompose 2/6 into 4 equal lengths
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