3 years ago

2+9n=72 how do you find what n equals?

Mathematics

1 answer:

Greeley [361]3 years ago

6 0

Answer:

the correct answer is 7.78

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Which is the best way to solve the equation x2 = n?

Gnom [1K]

$n$ - no solutions in real numbers

$n=0 \Rightarrow x=0$

$n>0 \Rightarrow x=\sqrt n \vee x=-\sqrt n$

7 0

3 years ago

A cone has a radius of 5 cm and a height of 9 cm. What is the volume of the cone to the nearest whole number? Use 3.14 for pi.

Katyanochek1 [597]

Answer:

235or 236

Step-by-step explanation:

A cone has a radius of 5 cm

a height of 9 cm

Volume of cone =1/3πr^2h

=1/3×3.14×5×5×9

= 3.14×25×3

=3.14×75

=235.5

=235or 236 is the answer

8 0

2 years ago

Lorelle pays someone $35 to clear her driveway when it snows. She wants to buy an electric snow blower for $689 so that she can

Ad libitum [116K]

Since 689 / 35 is about 20, it would take around 4 seasons to break even

3 0

3 years ago

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For Jacob's birthday, a basketball is wrapped in wrapping paper with no overlaps. The ball has a volume of 288π in3. What is the

Dimas [21]

288π×3=2714.33605 hope this helps

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3 years ago

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Evaluate the given integral by changing to polar coordinates. sin(x2 y2) dA R , where R is the region in the first quadrant betw

alexira [117]

Answer:

I = 1.47001

Step-by-step explanation:

we have the function

$f(x,y)=sin(x^2y^2)\\$

In polar coordinates we have

$x=rcos\theta\\y=rsin\theta$

and dA is given by

$dA=rdrd\theta$

Hence, the integral that we have to solve is

$I=\int \limt_2^4 \int \limit_0^{\pi /2}sin(r^4cos^2\theta sin^2\theta)rdrd\theta$

This integral can be solved in a convenient program of your choice (it is very difficult to solve in an analytical way, I use Wolfram Alpha on line)

I = 1.47001

Hope this helps!!!

7 0

3 years ago