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3 years ago

How many meters in three kilometer?

Mathematics

1 answer:

zhannawk [14.2K]3 years ago

4 0

There are 3000 meters in 3 kilometer. meaning that 1 kilometer is equal to 1000 meters

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Ticket sales for a concert totaled 88,200 dollars. Tickets for the concert coast 16 dollars each. How many tickets were sold? I

AnnyKZ [126]

Answer:

88,200:16 = 5,512.5

Step-by-step explanation:

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2 years ago

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The amount that Susan charges per hour for babysitting is directly proportional to the number of children she is watching. She c

max2010maxim [7]

$7.50 for 5 kids you divide 4.50 by 3 and get 1.50 and you take 1.50 times 5 and get 7.50

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2 years ago

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Use variation of parameters to find a general solution to the differential equation given that the functions y1 and y2 are linea

Aleks [24]

Recall that variation of parameters is used to solve second-order ODEs of the form

y''(t) + p(t) y'(t) + q(t) y(t) = f(t)

so the first thing you need to do is divide both sides of your equation by t :

y'' + (2t - 1)/t y' - 2/t y = 7t

You're looking for a solution of the form

$y=y_1u_1+y_2u_2$

where

$u_1(t)=\displaystyle-\int\frac{y_2(t)f(t)}{W(y_1,y_2)}\,\mathrm dt$

$u_2(t)=\displaystyle\int\frac{y_1(t)f(t)}{W(y_1,y_2)}\,\mathrm dt$

and W denotes the Wronskian determinant.

Compute the Wronskian:

$W(y_1,y_2) = W\left(2t-1,e^{-2t}\right) = \begin{vmatrix}2t-1&e^{-2t}\\2&-2e^{-2t}\end{vmatrix} = -4te^{-2t}$

Then

$u_1=\displaystyle-\int\frac{7te^{-2t}}{-4te^{-2t}}\,\mathrm dt=\frac74\int\mathrm dt = \frac74t$

$u_2=\displaystyle\int\frac{7t(2t-1)}{-4te^{-2t}}\,\mathrm dt=-\frac74\int(2t-1)e^{2t}\,\mathrm dt=-\frac74(t-1)e^{2t}$

The general solution to the ODE is

$y = C_1(2t-1) + C_2e^{-2t} + \dfrac74t(2t-1) - \dfrac74(t-1)e^{2t}e^{-2t}$

which simplifies somewhat to

$\boxed{y = C_1(2t-1) + C_2e^{-2t} + \dfrac74(2t^2-2t+1)}$

4 0

2 years ago

Ebony uses unit cubes to build the rectangular prism below.

exis [7]

Answer:

Step-by-step explanation:

The length is 4, the width is 2, and the height is 3.

$V=lwh=(2)(3)(4)=24$

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1 year ago

8. The high school graduating class of 2000 was 260 students. Five years later, the graduating class was 320 students. By 2010,

olga nikolaevna [1]

Answer:

the question is confusing but the answer is 2010

Step-by-step explanation:

because in the year 2000 it was

260

then increased by

over 5 years making the next class

320

then in 2010 it was

400

and 320 + what is 400?

so the answer is:

2010

4 0

2 years ago