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bixtya [17]
3 years ago
6

Need help with #2 and #3 all of the problem

Mathematics
1 answer:
-Dominant- [34]3 years ago
3 0

Answer:

ang hirap wag nlang hahahahahahahaha

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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
Joseph and Wendy were catching tadpoles. At first Wendy caught nine times three more than Joseph caught. Joseph was upset and re
Dmitriy789 [7]

Answer:

Joseph caught 7 tadpoles

Step-by-step explanation:

Let the number of tadpoles caught by Joseph be x

The number of tadpoles Wendy caught will be ;

9(x + 3)

After Joseph was upset, he released half of Wendy’s tadpole and then six times as many as Joseph caught swam away leaving Wendy with only three tadpoles left;

Hence, mathematically;

9(x + 3)/2 - 6x = 3

Multiply through be 2

9(x + 3) - 12x = 6

9x + 27 -12x = 6

9x -12x = 6-27

3x = 21

x = 21/3

x = 7

6 0
4 years ago
Anna and Belle are asked to solve −2x − 15 = 6x + 9. Identify where one of them made an error.
SIZIF [17.4K]
Ok so first you need to identify what you are looking for... you need to find x. 
to do that you need toge it on one side. so cancel out the "-2x" on the left side by adding 2x(on both sides, don't forget you add common variables). now you should have something like this...
-15=8x+9
now all you have to do is get rid of the 9  by subtracting 9 on both sides
you should have 
-24=8x
 With that, all you have to do now is divide 8 into both sides and it should look like a fraction now

-24/8=8x/8
the 8x/8 will cancel out the 8 and you will have 
-24/8=x
Simplify that and you should get
-3=x
need me to explain it with fewer words?
7 0
3 years ago
The magnitude, M, of an earthquake is defined to be M=log I/S, where I is the intensity of the earthquake (measured by the ampli
allochka39001 [22]

log(35) = 1.544

 rounded to nearest tenth = 1.5

7 0
3 years ago
Read 2 more answers
4x2+15x+49 whats the answer
ehidna [41]

Hi there!

Here are all the steps into simplifying this expression :

<u>(4 × 2)</u> + 15x + 49

Do the multiplication first → 4 × 2 = 8

<u>8</u> + 15x + <u>49</u>

Add the similar terms together → 8 + 49 = 57

15x + 57


Since there are no longer similar terms, the expression can not be simplified anymore and you are left with this expression as an answer :

15x + 57


There you go! I really hope this helped, if there's anything just let me know! :)


5 0
4 years ago
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