3 years ago

How do you solve surface area

Mathematics

1 answer:

Goshia [24]3 years ago

8 0

You will find the length of all sides to be able to multiply length by width

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Carl spent $200 in six days. He spent $60 on the first day. He spent the same amount of money during the next five days. a. Writ

qaws [65]

Answer:

200 divided by 60

Step-by-step explanation:

7 0

3 years ago

Finding the volume of the solid.Use unit cubes to help.

9966 [12]

Answer:

the answer is 125. if you cut them slice to slice you'll get 25 because of there five slices of 25 all you got to do is 25 x 5 and you'll get 125.

Hope this help

Have a nice day :)

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3 years ago

Determine whether each statement is true or false. If false, give a counterexample.

bezimeni [28]

This statement is true, or else you wouldn't have a sphere.

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3 years ago

1) Use power series to find the series solution to the differential equation y'+2y = 0 PLEASE SHOW ALL YOUR WORK, OR RISK LOSING

iogann1982 [59]

$y=\displaystyle\sum_{n=0}^\infty a_nx^n$

then

$y'=\displaystyle\sum_{n=1}^\infty na_nx^{n-1}=\sum_{n=0}^\infty(n+1)a_{n+1}x^n$

The ODE in terms of these series is

$\displaystyle\sum_{n=0}^\infty(n+1)a_{n+1}x^n+2\sum_{n=0}^\infty a_nx^n=0$

$\displaystyle\sum_{n=0}^\infty\bigg(a_{n+1}+2a_n\bigg)x^n=0$

$\implies\begin{cases}a_0=y(0)\\(n+1)a_{n+1}=-2a_n&\text{for }n\ge0\end{cases}$

We can solve the recurrence exactly by substitution:

$a_{n+1}=-\dfrac2{n+1}a_n=\dfrac{2^2}{(n+1)n}a_{n-1}=-\dfrac{2^3}{(n+1)n(n-1)}a_{n-2}=\cdots=\dfrac{(-2)^{n+1}}{(n+1)!}a_0$

$\implies a_n=\dfrac{(-2)^n}{n!}a_0$

So the ODE has solution

$y(x)=\displaystyle a_0\sum_{n=0}^\infty\frac{(-2x)^n}{n!}$

which you may recognize as the power series of the exponential function. Then

$\boxed{y(x)=a_0e^{-2x}}$

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3 years ago

What are the solutions of the following equation?<br>4|x - 9| + 9 = -3|x - 9| + 9

Stells [14]

Answer:

X=9

Step-by-step explanation:

8 0

3 years ago