El área superficial total de los veinte tarugos es mayor que el área superficial cubierta por el pegamento.
<h3>Como determinar si la superficie cubierta por el pegamento es suficiente</h3>
En esta pregunta debemos calcular el área superficial total de los tarugos (
), en milímetros cuadrados, y comparar el resultado con la cifra afirmada por Eduardo. El área superficial total es:
![A_{s} = 20\cdot \pi\cdot (5\,mm)^{2}\cdot (80\,mm)](https://tex.z-dn.net/?f=A_%7Bs%7D%20%3D%2020%5Ccdot%20%5Cpi%5Ccdot%20%285%5C%2Cmm%29%5E%7B2%7D%5Ccdot%20%2880%5C%2Cmm%29)
![A_{s} \approx 125663.706\,mm^{2 }](https://tex.z-dn.net/?f=A_%7Bs%7D%20%5Capprox%20125663.706%5C%2Cmm%5E%7B2%20%7D)
En consecuencia, el área superficial total de los veinte tarugos es mayor que el área superficial cubierta por el pegamento. Francisca tiene la razón. ![\blacksquare](https://tex.z-dn.net/?f=%5Cblacksquare)
<h3>Observación</h3>
El enunciado omite las dimensiones <em>geométricas</em> de cada tarugo (5 milímetros de radio y 80 milímetros de longitud).
Para aprender más sobre áreas, invitamos cordialmente a ver esta pregunta verificada: brainly.com/question/391394
Answer:
$130
Step-by-step explanation:
To find the tip you have to change the percent into a fraction first. Since percent is out of a 100, 25% is 25/100 or 1/4. Multiplying 1/4 by 520 you get 130, which is how much the coach will tip.
Answer:
The average rate of change of the function over the interval is 5.
Step-by-step explanation:
Average rate of change of a function:
The average rate of change of a function f(x) over an interval [a,b] is given by:
![A = \frac{f(b)-f(a)}{b-a}](https://tex.z-dn.net/?f=A%20%3D%20%5Cfrac%7Bf%28b%29-f%28a%29%7D%7Bb-a%7D)
Interval -3 less-than-or-equal-to x less-than-or-equal-to 3
This means that ![a = -3, b = 3](https://tex.z-dn.net/?f=a%20%3D%20-3%2C%20b%20%3D%203)
![f(x) = x^2 + 3x + 6](https://tex.z-dn.net/?f=f%28x%29%20%3D%20x%5E2%20%2B%203x%20%2B%206)
So
![f(b) = f(3) = (3)^2 + 3(3) + 6 = 9 + 9 + 6 = 24](https://tex.z-dn.net/?f=f%28b%29%20%3D%20f%283%29%20%3D%20%283%29%5E2%20%2B%203%283%29%20%2B%206%20%3D%209%20%2B%209%20%2B%206%20%3D%2024)
![f(a) = f(-3) = (-3)^2 + 3(-3) + 6 = 9 - 9 + 6 = 6](https://tex.z-dn.net/?f=f%28a%29%20%3D%20f%28-3%29%20%3D%20%28-3%29%5E2%20%2B%203%28-3%29%20%2B%206%20%3D%209%20-%209%20%2B%206%20%3D%206)
Average rate of change
![A = \frac{f(b)-f(a)}{b-a} = \frac{24+6}{3-(-3)} = \frac{30}{6} = 5](https://tex.z-dn.net/?f=A%20%3D%20%5Cfrac%7Bf%28b%29-f%28a%29%7D%7Bb-a%7D%20%3D%20%5Cfrac%7B24%2B6%7D%7B3-%28-3%29%7D%20%3D%20%5Cfrac%7B30%7D%7B6%7D%20%3D%205)
The average rate of change of the function over the interval is 5.
Answer:
30 dollars
Step-by-step explanation:
packages-$12.36 x 2=24.72
broccoli-$1.98/2=.99
milk-$3.49
$24.72+.99=25.71
$25.71+$3.49=29.20
$29.20+.80=30.00
she payed with $30.00
X=6 because
9-6=3
X=3 because
2•3=6
X=2 because
1.5 or 1 1/2 • 2 = 3
Not sure if this was what you needed or not!