3 years ago

Describe a real world problem you can solve with a calculator and a measuring stick (mathematics)

1 answer:

5 0

- Calculating the area of a soccer field, Calculate area of _______

- Calculate the average height of everyone in your family

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PLEASE ANSWER FAST!!!

8090 [49]

Answer:

There isnt a graph to see

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3 years ago

Jessica wrote a report

LenaWriter [7]

Answer: 12:14 pm.

Explanation: 27 minutes after when Sally started, 11:48, is 12:14.

7 0

3 years ago

How do you integrate arctan(x dx? i think that if you simplify the integral you get:?

Temka [501]

Integration by parts will help here. Letting $u=\arctan x$ and $\mathrm dv=\mathrm dx$ , you end up with $\mathrm du=\dfrac{\mathrm dx}{1+x^2}$ and $v=x$ . Now

$\displaystyle\int\arctan x\,\mathrm dx=uv-\int v\,\mathrm du$
$\displaystyle\int\arctan x\,\mathrm dx=x\arctan x-\int\frac x{1+x^2}\,\mathrm dx$

For the remaining integral, setting $y=1+x^2$ gives $\dfrac{\mathrm dy}2=x\,\mathrm dx$ , so

$\displaystyle\int\frac x{1+x^2}\,\mathrm dx=\frac12\int\frac{\mathrm dy}y=\frac12\ln|y|+C=\frac12\ln(1+x^2)+C$

Putting everything together, you end up with

$\displaystyle\int\arctan x\,\mathrm dx=x\arctan x-\frac12\ln(1+x^2)+C$

6 0

3 years ago

Convert the polar coordinates (120.2, 119°) into rectangular coordinates. Round the rectangular coordinates to the nearest hundr

Alchen [17]

The conversion is
x = magnitude × cos(angle)
y = magnitude × sin(angle)
or
(x, y) = 120.2(cos(119°), sin(119°)) ≈ (-58.27, 105.13)

_____
A suitable graphing calculator handles this easily.

7 0

2 years ago

Tephen read 12 books, 20 magazines, and 17 newspaper articles last year. based on this data, what is a reasonable estimate of th

Basile [38]

THERE IS A 41% CHANCE HIS NEXT READING MATERIAL WILL BE A MAGAZINE

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3 years ago

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