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Sindrei [870]
4 years ago
13

A colony of bacteria doubles every minute. If

Mathematics
1 answer:
enyata [817]4 years ago
4 0

Answer: 720

Step-by-step explanation:do 120 plus 120 plus 120 plus 120 plus 120 plus 120

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Ao cobrar uma falta em um jogo de futebol, uma jogador imprime à bola a uma velocidade de 43,2 km/h. Sabendo que a bola gasta 3
Yakvenalex [24]

Answer:

B

Step-by-step explanation:

Nesta questão, estamos interessados ​​em calcular a distância percorrida se um jogador correr a uma velocidade de 43,2 km / h por 3 segundos.

Matematicamente; a distância percorrida = velocidade * tempo

O problema que temos aqui é que nossas unidades não são consistentes.

A melhor maneira de fazer isso é ter unidades consistentes em metros por segundos e segundos, pois nossa resposta está em metros.

Portanto, a conversão que precisamos fazer aqui é converter 43,2 km / h em metros por segundo Matematicamente, sabemos que existem 1000 m em um quilômetro.

Da mesma forma, uma vez que 60 segundos fazem um minuto e 60 minutos fazem uma hora, o número de segundos em uma hora é 60 * 60 = 3.600 segundos

Assim, convertendo 43,2 km / h em m / s, temos; (43,2 * 1000) / 3600 = 12 m / s

Portanto, a distância percorrida em metros seria agora; velocidade em m / s * tempo em segundos = 12 m / s * 3 segundos = 36 m

5 0
4 years ago
Please do both please answer properly and show how u got ur answer
Sphinxa [80]

Answer:

a) No.

b) Yes.

Step-by-step explanation:

a) It's not proportional. Although the graph represents a straight line, it does not pass through the origin (0,0).

b) It is proportional. It is a straight line that passes through the origin.

6 0
3 years ago
Hey! i’ll give brainliest please help.
Studentka2010 [4]

Answer:

Collect taxes

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Find the measure for angle DEF
nadezda [96]

Answer:

Step-by-step explanation:

∠DEF=90-58.2=31.8°

4 0
3 years ago
Read 2 more answers
Write the matrix equation as a system of linear equations without matrices. [Start 3 By 3 Matrix 1st Row 1st Column 1 2nd Column
ASHA 777 [7]

Answer:

x-2y-4z=8\\5x-4y+7z=5\\-7x+5y+2z=-3

Step-by-step explanation:

Given the matrix equation below:

\left(\begin{array}{ccc}1&-2&-4\\5&-4&7\\-7&5&2\end{array}\right)\left(\begin{array}{ccc}x\\y\\z\end{array}\right) =\left(\begin{array}{ccc}8\\5\\-3\end{array}\right)

We are required to write the matrix equation as a system of linear equations without matrices.

\left(\begin{array}{ccc}1&-2&-4\\&&\\&&\end{array}\right)\left(\begin{array}{ccc}x\\y\\z\end{array}\right) =\left(\begin{array}{ccc}8\\&\\&\end{array}\right)$is equivalent to: x-2y-4z=8

\left(\begin{array}{ccc}\\5&-4&7\\&&\end{array}\right)\left(\begin{array}{ccc}x\\y\\z\end{array}\right) =\left(\begin{array}{ccc}&\\5\\&\end{array}\right)$ is equivalent to: 5x-4y+7z=5

\left(\begin{array}{ccc}&\\&\\-7&5&2\end{array}\right)\left(\begin{array}{ccc}x\\y\\z\end{array}\right) =\left(\begin{array}{ccc}&\\&\\-3\end{array}\right)$ is equivalent to: -7x+5y+2z=-3

Therefore, we have the system of equations:

x-2y-4z=8\\5x-4y+7z=5\\-7x+5y+2z=-3

8 0
3 years ago
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