Karim's teacher gives him a book to read and one week to read it. The book has a

Mathematics

1 answer:

klasskru [66]2 years ago

5 0

130+107 = 237
560-237= 323

Karim has 323 pages left to read

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Solve the initial value problem yy′+x=x2+y2‾‾‾‾‾‾‾√ with y(1)=8‾√. To solve this, we should use the substitution u= x^2+y^2 help

leva [86]

Looks like the equation is

$yy'+x=\sqrt{x^2+y^2}$

Substitute $u(x)=x^2+y(x)^2$ , so that $u'=2x+2yy'$ . Then the equation is the same as

$\dfrac{u'-2x}2+x=\sqrt u\implies u'=2\sqrt u\implies\dfrac{\mathrm du}{2\sqrt u}=\mathrm dx$

Integrate both sides to get

$\sqrt u=C\implies\sqrt{x^2+y^2}=C$

Given that $y(1)=\sqrt8$ , we have

$\sqrt{1^2+(\sqrt8)^2}=C\implies C=3$

so the solution is

$\sqrt{x^2+y^2}=3$

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2 years ago

Evaluate 5(6) -c ifc=7

ahrayia [7]

23.

Work:
5(6)-7
5(6)=30
30-7=23

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3 years ago

Read 2 more answers

Jude is placing boxes on a shelf that holds no more than 80 lb. He has x small boxes that weigh 5 lb each and y large boxes that

sweet [91]

5x + 12y < 80 and x ≥ 4 and y > 0

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3 years ago

The price of a CD on sale is 0.65c, where c is the original price of the CD. What does that mean?

Nuetrik [128]

Hey there!

If the price of a CD on sale is 0.65c, then 0.35 was taken off of the original price. You can find this if you subtract 0.65 from 1, or 65% from 100%.

Your answer would not be your second option or your fourth option, since the price you're paying is 0.65 of the original price and you are getting 0.35 of the price off. Also, your third option wouldn't be correct either, since 0.35 isn't being added on top of the total price.

Your answer is your first option.

Hope this helped you out! :-)

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3 years ago

Find the value of 14/8 + 15/12

n200080 [17]

Answer:

The value of $\frac{14}{8} + \frac{15}{12}$ = 3