3 years ago

Meh need answer plez and FAST~

Mathematics

2 answers:

ahrayia [7]3 years ago

7 0

Answer:

I need a question for an answer.

Step-by-step explanation:

.....

Neporo4naja [7]3 years ago

5 0

Answer:

Where is the question?

Step-by-step explanation:

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Last month, a cafe had 3200 customers. 600 of them ordered gluten-free meals. What percentage of the customers ordered gluten-fr

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18.75%

Step-by-step explanation:

600÷3200=0.1875

0.1875=18.75%

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4 years ago

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Evaluate the series 4 sigma n=1 n+4

musickatia [10]

Answer:

$\sum _{n=1}^4n+4=26$

Step-by-step explanation:

Given : $\sum _{n=1}^4\:n+4$

We have to evaluate the sum.

Consider , the given sum $\sum _{n=1}^4\:n+4$

Apply the sum rule, $\sum a_n+b_n=\sum a_n+\sum b_n$

we have,

$=\sum _{n=1}^4n+\sum _{n=1}^44$

Consider $\sum _{n=1}^4n$ first,

Applying sum formula, $\sum _{k=1}^nk=\frac{1}{2}n\left(n+1\right)$

Here, n = 4, we get,

$=\frac{1}{2}\cdot \:4\left(4+1\right)$

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Now consider $\sum _{n=1}^44$

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Thus, $\sum _{n=1}^4n+4=26$

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4 years ago

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