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3 years ago

Help me plz :)))))

Mathematics

1 answer:

Vika [28.1K]3 years ago

7 0

Answer:

2 3 1 3

Step-by-step explanation:

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The puppy daycare has 38 doggie treats for 9 dogs to share evenly. The leftovers will be placed back into the jar.

Svetlanka [38]

The answer is A. 2

9x4=36
38-36=2

6 0

3 years ago

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3:4=x:12 1:2=x:6 2:5=x:100 2:6=x:12 1:3=x:75

saveliy_v [14]

Can someone help me please

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3 years ago

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

A can in your pantry has a 1.4 inch radius and is 5 inches tall. What is the surface area of the can to the nearest tenth?

WITCHER [35]

Formula for surface area is pi DH.diameter is radius multiplied by 2 which is 2.8.pi is22/7.multiply 22/7 to 2.8 which is 8.8.multiply 8.8 with height(5 inches) to get 44.0 as the answer

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3 years ago

There are 460 students enrolled at freedom academy. 40 percent of the students are male. How many males attend Freedom academy?

arsen [322]

Answer:

184

Step-by-step explanation:

convert percentage into decimal:

40% = 40/100 = 0.4

Therefore 40% of 460 = 0.4 x 460 = 184

8 0

2 years ago

Read 2 more answers

Help me plz :))))) ​

Help me plz :)))))