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ziro4ka [17]
3 years ago
12

Which are true and which are false?

Mathematics
1 answer:
patriot [66]3 years ago
3 0

Answer:

true

Step-by-step explanation:

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En la tienda de mascotas "Animalo-T", se desea elevar un elefante de 2,900 kg utilizando una elevadora hidráulica de plato grand
Korvikt [17]

Answer:

Se requiere una fuerza de 854.473 newtons sobre el émbolo pequeño.

Step-by-step explanation:

Por el Principio de Pascal se conoce que el esfuerzo experimentado por el elefante es igual a la presión ejercida por el plato pequeño. Es decir:

\frac{F_{1}}{A_{1}} = \frac{F_{2}}{A_{2}} (1)

Donde:

F_{1} - Fuerza experimentada por el elefante, medida en newtons.

F_{2} - Fuerza aplicada sobre el plato pequeño, medida en newtons.

A_{1} - Área del plato grande, medida en metros cuadrados.

A_{2} - Área del plato pequeño, medida en metros cuadrados.

La fuerza aplicada sobre el plato pequeño es:

F_{2} = \left(\frac{A_{2}}{A_{1}} \right)\cdot F_{1}

La fuerza experimentada por el elefante es su propio peso. Por otra parte, el área del plato es directamente proporcional al cuadrado de su diámetro. Es decir:

F_{2} = \left(\frac{D_{2}}{D_{1}} \right)^{2}\cdot m\cdot g (2)

Donde:

D_{1} - Diámetro del plato grande, medido en centímetros.

D_{2} - Diámetro del plato pequeño, medido en centímetros.

m - Masa del elefante, medida en kilogramos.

g - Aceleración gravitacional, medida en metros por segundo cuadrado.

Si sabemos que D_{1} = 0.75\,m, D_{2} = 0.13\,m, m = 2900\,kg y g = 9.807\,\frac{m}{s^{2}}, entonces la fuerza a aplicar al émbolo pequeño es:

F_{2} = \left(\frac{0.13\,m}{0.75\,m} \right)^{2}\cdot (2900\,kg)\cdot \left(9.807\,\frac{m}{s^{2}} \right)

F_{2} = 854.473\,N

Se requiere una fuerza de 854.473 newtons sobre el émbolo pequeño.

3 0
3 years ago
Solve the equation <img src="https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7B3%7D%20-%5Cfrac%7B3-2x%7D%7B6%7D%3D%5Cfrac%7B5%7D%7B2%7D%2
mestny [16]

Answer:

x = - \frac{3}{11}

Step-by-step explanation:

Given

\frac{x}{3} - \frac{3-2x}{6} = \frac{5}{2} x

Multiply through by 6 to clear the fractions

2x - (3 - 2x) = 15x ← distribute and simplify left side

2x - 3 + 2x = 15x

4x - 3 = 15x ( subtract 4x from both sides )

- 3 = 11x ( divide both sides by 11 )

- \frac{3}{11} = x

7 0
3 years ago
Read 2 more answers
HELP<br><br> no bots pls<br><br> Can someone help me with this thank you if you do
dem82 [27]

Answer:

A :)

Step-by-step explanation:

5x would be the hourly rate

100 is the booking fee

add them

to get the amount he made

Brainliest?? :)

3 0
3 years ago
.Write 784,229 in expanded form
Snowcat [4.5K]

Answer:

700,000+80,000+4,000+200+20+9

8 0
3 years ago
Read 2 more answers
Saj makes Rose Pink paint and Cherry Pink paint. He mixes red paint with white paint as shown. Rose Pink red : white =1:2 Cherry
Julli [10]

Answer:

No. He had not made cherry pink paint

Step-by-step explanation:

Rose Pink red : white = 1 : 2

Cherry Pink red : white = 4 : 3

<em>...he adds 80 litres of red paint and 28 litres of white paint.</em>

The question basically want us to check if it follows the ratio.

To have the cherry pink, the ratio must be 4:3 however the ration of paint he mixed is;

80 : 28 which is equivalent to 20 : 7

This means he had not made cherry pink paint

5 0
3 years ago
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