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jonny [76]
3 years ago
6

Teresa placed parentheses in the expression below so that its value was greater than 80. Write the expression to show where Tere

sa might have placed the parentheses. 10.5 + 9.5 × 3 - 1 × 2.5
Mathematics
1 answer:
AlexFokin [52]3 years ago
4 0
The x shows how they are meeting with the things to be with
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Una máquina llena 4 baldes de helado en 30 minutos, funcionando siempre a la misma velocidad Si ante un corte de luz, solo funci
salantis [7]

Answer:

La máquina llenó:

6 baldes

Step-by-step explanation:

Por regla de tres:

4 baldes son a 30 minutos

M baldes son a 45 minutos

M = 45*4/30

M = 180/30

M = 6

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Nikolay [14]
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4n+78n-3/4=942???<br>PLEASE SHOW STEPS ON HOW YOU GOT IT!
Rainbow [258]
4n+78n-3/4=942
     l
   82n - 3/4=942
           +3/4  +3/4(.75)
    82n=942.75
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3 years ago
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4 students from a class of 15 are going to be chosen to be on the dance committee. Find the number of different 4-person committ
Andrej [43]
We know that
The formula for combinations is
C=n!/[(n-r)!*r!]
where
n is the total number of objects you choose from
r is the number that you choose to arrange

in this problem
n=15 students
r=4 students
C=15!/[(15-4)!*4!]-----> C=15!/[11!*4!]---> (15*14*13*12*11!)/(11!*4*3*2*1)
C=(15*14*13*12)/(24)----->C=1365

the answer is
1365
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Answer: a. Area b. 4222.26

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