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olasank [31]
3 years ago
11

I need help with math can someone please help me

Mathematics
1 answer:
ratelena [41]3 years ago
4 0

Answer:

133.1

Step-by-step explanation:

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PlZ HELP ME I REALLY NEED THE ANSWERS. WILL GIVE BRAINLIEST. THANKYOU SO MUCH!!!
Dovator [93]

Answer:

Answers are listed hoping that they make sense XD

Step-by-step explanation:

1. -0.5

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I just substituted the value given from x and solved for y. I hope that is what the question is asking for.

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4 0
3 years ago
Two trains leave a train station at the same time. One travels north at 12 miles per hour. The other train travels south at 9 mi
svp [43]

Answer:

4.2 hours

Step-by-step explanation:

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3 years ago
Given the Homogeneous equation x^2ydy+xy^2dx=0, use y=ux, u=y/x and dy=udx+xdu to solve the differential equation. Solve for y.
scZoUnD [109]

Answer:

y=\frac{C}{x}.

Step-by-step explanation:

Given homogeneous equation

x^2ydy+xy^2dx=0

\frac{\mathrm{d}y}{\mathrm{d}x}=-\frac{xy^2}{x^2y}

Substitute y=ux , u=\frac{y}{x}

\frac{\mathrm{d}y}{\mathrm{d}x}=-\frac{y}{x}

Now,

u+x\frac{\mathrm{d}u}{\mathrm{d}x}=\frac{\mathrm{d}y}{\mathrm{d}x}

u+x\frac{\mathrm{d}u}{\mathrm{d}x}=-u

\frac{\mathrm{d}u}{\mathrm{d}x}=-2u

\frac{du}{u}=-\frac{dx}{x}

Integrating both side we get

lnu=-2lnx+lnC

Where lnC= integration constant

lnu+ln{x}^2=lnC

lnux^2=lnC

Cancel ln on both side

ux^2=C

Substitute u=\frac{y}{x}

Then we get

xy=C

y=\frac{C}{x}.

Answer:y=\frac{C}{x}.

8 0
3 years ago
Which statements are accurate about the dilation? Check all that apply. The dilation is a reduction. The scale factor is between
ludmilkaskok [199]

Answer:

A,B,D

Step-by-step explanation:

Trust me just did it on edge

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2 years ago
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Your answer is attached to the pic

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3 years ago
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