An Aluminum bar is 2 m long at a temperature of 20 degrees Celsius. What will it be at 100 degrees Celsius?

2 answers:

ddd [48]4 years ago

7 0

Answer:

Step-by-step explanation:

20*5=100

Inga [223]4 years ago

3 0

Answer:

10 meters

Step-by-step explanation:

Let at 100 degrees Celsius, the aluminum bar is x m long.

We have been given that aluminum bar is 2 m long at a temperature of 20 degrees Celsius.

Thus, we have the equation

$\frac{2}{20}=\frac{x}{100}$

Solve the equation for x

$x=\frac{2\times100}{20}\\\\x=10$

Thus, at 100 degree Celsius, the aluminium bar is 10 meters long.

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line AB is perpendicular to the line $y=\frac{1}{4}x-3$ , this equation is slope intercept for, which is $y=mx+b$ so our m or slope is $\frac{1}{4}$
Since the slope of line AB is perpendicular to $m=\frac{1}{4}$ then we use the equation $slope of line1\times slopeofline2=-1$ , so what do we multiply $\frac{1}{4}$ by to get -1? -4 right, so that's the slope of line AB with the point (2,0)
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So we make the equation $y-y_1=m(x-x_1)$ so m= -4 and our point is (-1,6)
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