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3 years ago

SimplIfy [(-49)÷7]÷(-7)]

Mathematics

1 answer:

Marysya12 [62]3 years ago

4 0

Answer:

I think the answer is 1

Step-by-step explanation:

-49÷7=-7

-7÷-7=1

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A curious patterns occurs in a group of people who all shake hands with one another. It turns out that you can predict the numbe

ycow [4]

Missing part of the question

Determine the number of handshakes, i, that will occur for each number of people, n, in a particular room. (people)

Answer:

$S_n = \frac{n}{2}(n - 1)$

Step-by-step explanation:

Given

For 5 people

$\begin{array}{cc}{People} & {Handshakes} & {5} & {4} & {4} & {3} & {3} & {2} & {2} & {1} & {1} & {0} &{Total} & {10} \ \end{array}$

Using the given instance of 5 people, the number of handshakes can be represented as:

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$S_n = \frac{n}{2}{(T_1 + T_n})$

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2 years ago

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Lerok [7]

Answer:

q=-1

Step-by-step explanation:

.8-.4q=.2q+1.4

-.2q -.2q

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