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Leno4ka [110]
3 years ago
6

Please i beg of you, help

Mathematics
1 answer:
IgorC [24]3 years ago
8 0
Larry is a smart man, and he’s correct. (x+3)(4x-5)
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21.58 correct to 2 decimal places
enot [183]

Answer:

Step-by-step explanation:

its 22.00 or just 22

3 0
3 years ago
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A group of fitness club members lose a combined total of 28 kg in one week there approximately 2.2 pounds and 1 kg assuming the
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Answer:

  8.8 pounds

Step-by-step explanation:

There are 7 days in a week, so the daily loss was ...

  (28 kg)/(7 days) = 4 kg/day

In pounds, that is about ...

  (4 kg/day)(2.2 lb/kg) = 8.8 lb/day

6 0
3 years ago
This is 6th grade math please help me!! ​
Lyrx [107]
Answer:9
10-|-1|
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3 years ago
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You have 10 gallons of lemonade to sell. 1 gallon is approxiamately 3785 cm3. Each customer uses one paper cup as shown. Hay man
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5 0
3 years ago
Find a particular solution to the nonhomogeneous differential equation y'' + 4 y = cos(2x) + sin(2x).
alukav5142 [94]
The characteristic solution follows from solving the characteristic equation,

r^2+4=0\implies r=\pm2i

so that

y_c=C_1\cos2x+C_2\sin2x

A guess for the particular solution may be a\cos2x+b\sin2x, but this is already contained within the characteristic solution. We require a set of linearly independent solutions, so we can look to

y_p=ax\cos2x+bx\sin2x

which has second derivative

{y_p}''=(-4ax+4b)\cos2x+(-4bx-4a)\sin2x

Substituting into the ODE, you have

y''+4y=\cos2x+\sin2x
\implies4b\cos2x-4a\sin2x=\cos2x+\sin2x
\implies\begin{cases}4b=1\\-4a=1\end{cases}\implies a=-\dfrac14,b=\dfrac14

Therefore the particular solution is

y_p=-\dfrac14x\cos2x+\dfrac14x\sin2x

Note that you could have made a more precise guess of

y_p=(a_1x+a_0)\cos2x+(b_1x+b_0)\sin2x

but, of course, any solution of the form a_0\cos2x+b_0\sin2x is already accounted for within y_c.
6 0
3 years ago
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