What is the percent error in using 3.14 ?

1 answer:

5 0

Using the method Percentage error = |(Vtrue - Vused)/Vtrue| X 100. I got a percentage error of -0.0507%. Of course here are the numbers I used.

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Use the parabola tool to graph the quadratic function f(x)=−(x−2)2+4.

11Alexandr11 [23.1K]

Answer:Use demos it could give you the answer

Step-by-step explanation:

6 0

3 years ago

As John walks 16 ft towards a chimney, the angle of elevation from his eye to the top of the chimney changes from 30° to 45°. Id

levacccp [35]

ANSWER

The height is $22ft$

EXPLANATION

Let the height of the chimney be x.

$\tan(45 \degree) = \frac{x}{y}$

$1 = \frac{x}{y}$

$x = y$

$\tan(30 \degree) = \frac{x}{16+ y}$

$\frac{ \sqrt{3} }{3} = \frac{x}{16 + y}$

Cross multiply

$\sqrt{3} (16 + y) = 3x$

$16 \sqrt{3} + y \sqrt{3} = 3x$

Put

$y = x$

into the equation;

$16 \sqrt{3} + x \sqrt{3} = 3x$

Group similar terms:

$16 \sqrt{3}= 3x - x \sqrt{3}$

$16 \sqrt{3}= (3 - \sqrt{3})x$

$\frac{16 \sqrt{3} }{3 - \sqrt{3} } = x$

$x=21.856$

The height of the chimney to the nearest feet is 22

6 0

3 years ago

What 17 multiply and adds to get -2

Marrrta [24]

17 * 0 + -2.

Now we rewrite the equation and make it 17 * 0 - 2 and u get -2.

8 0

4 years ago

Read 2 more answers

HELP ME PLEASE ASAP?!?What is the value of y?

Snezhnost [94]

Answer: y = 57°

Explanation: 180-114 = 66°

A triangle has a total of 180° so 180-66 = 114

114 / 2 = 57° (because angles y and y have the same value)

Hope this helps :)

7 0

3 years ago

What % of 400 = 193

saveliy_v [14]

The best way to find your answer is to divide 193 by 400 to get .4825 and to make sure if it is the answer you take 400 and multiply .4825 and it will be 193 so .4825 = 48.25%

3 0

3 years ago