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Lelu [443]
2 years ago
12

A cylindrical specimen of cold-worked copper has a ductility (%el) of 25%. if its cold-worked radius is 10 mm, what was its radi

us (in mm) before deformation
Mathematics
1 answer:
loris [4]2 years ago
5 0

The radius of the cylinder before deformation is 7.5mm

<h3>Deformation of an object</h3>

From the given question, we are given that;

cold work radius of the cylinder is 10mm

Ductility = 25%

Determine the radius before deformation

Radius before deformation = (1-  0.5) + 10

Radius before deformation = 0.75 * 10

Radius before deformation = 7.5mm

Hence the radius of the cylinder before deformation is 7.5mm

Learn more on deformation here: brainly.com/question/6417346

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Lelu [443]

I don’t know the answer

5 0
3 years ago
En la feria una pera tiene un valor de b pesos y una manzana cuesta 7 pesos menos.la señora Rina compro 4 peras y una manzana. E
marin [14]

Answer:

El total que la señora Rina pagó por sus frutas, en términos de b, es:

  • <u>5b - 7</u>

Step-by-step explanation:

Para resolver este ejercicio, primero sacaremos las variable que nos brindan:

  • Costo de la pera = b
  • Costo de la manzana = b - 7 (esto se debe a que la manzana cuesta 7 pesos menos que la pera, tal como dice el enunciado).

Ahora, nos centraremos en la compra realizada por la señora Rina, donde se menciona que:

  • <em>Compra de la señora Rina = 4 peras + 1 manzana</em>

Ahora, como si esto fuera una ecuación, vamos a reemplazar las manzanas y las peras por las variables que tenemos de su costo:

  • Compra de la señora Rina = 4b + b - 7

Y procedemos a operar:

  • <u>Compra de la señora Rina = 5b - 7</u> (sumando 4b + b)

Por lo tanto, <u><em>la compra de la señora Rina, en términos de b, le ha costado 5b - 7</em></u>.

6 0
3 years ago
©<br> Which number does NOT represent a whole number?<br> A 8<br> B 12<br> C-10<br> 15<br> 3<br> tor
alexira [117]

9514 1404 393

Answer:

  C.  -10

Step-by-step explanation:

Whole numbers are non-negative integers. -10 is not a whole number.

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3 years ago
In a class, 60% of the students are girls. There are 18 girls in the class.
Katarina [22]

Answer:

a. Total of 45 students.

b. 18 Boys.

5 0
3 years ago
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Why can I not subtract this pls help
son4ous [18]
To subtract this number you should break it down first. Try subtracting $25.00 -12.75 and then take that answer and subtract it by $8.50. 
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3 years ago
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