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horsena [70]
3 years ago
11

Doblando un alambre de 40 cm formamos un rectángulo. Hallar la expresión algebraica que define el área del rectángulo y calcula

su valor para x=4.
Mathematics
1 answer:
Lady bird [3.3K]3 years ago
5 0

Answer:

A = 128\,cm^{2}

Step-by-step explanation:

El área del rectángulo se halla a través de la siguiente fórmula: (The area of the rectangle is obtained by the following formula:)

A = (40\,cm - 2\cdot x)\cdot x

Donde el área y x se miden en centímetros cuadrados y centímetros, respectivamente. (Where area and x are measured in square centimeters and centimeters, respectively)

Ahora, x se reemplaza y se encuentra el valor numérico del área: (Now, x is substituted and numerical value of area is finally determined:)

A = [40\,cm - 2\cdot (4\,cm)]\cdot (4\,cm)

A = 128\,cm^{2}

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{F, O, U, R} in the word 'FOUR'

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Tickets at the carnival cost 35 each.on Friday night the carnivals earned a total of 12,425 in ticket sales on Saturday night th
Blababa [14]

ticket sale on Saturday night is triple the ticket sale on Friday night.

Therefore

ticket sales on Saturday night = 3 x 12425 = 37275

Then

ticket sales for both nights = 12425 + 37275 = 49700

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Let the number of people that attended the carnival on both nights be n.

Then, we have

\begin{gathered} 35n=49700 \\ \Rightarrow n=\frac{49700}{35}=1420 \end{gathered}

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6 0
11 months ago
Population in Millions
storchak [24]

Answer:

0.486% of world population lives in Canada.

Step-by-step explanation:

Given: World Population= 7691 million.

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Now, finding the percentage of world population lives in Canada.

Population\ percentage= \frac{Canada\ population}{World\ population} \times 100

⇒ Population\ percentage= \frac{37.4}{7691} \times 100

⇒ Population\ percentage= 0.00486\times 100

∴ Population\ percentage= 0.486\%

Hence, 0.486% of world population lives in Canada.

5 0
3 years ago
Please Help..............
Anvisha [2.4K]
Well to do scientific notation u have to use 10 then an exponent 
example: 
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so u need exponents to do scientific notation.
7 0
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