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ddd [48]
3 years ago
7

22÷1/5 (urgent) I need this ​

Mathematics
2 answers:
svp [43]3 years ago
7 0

Answer:

i think its 110

Step-by-step explanation:

i just used a calculator

castortr0y [4]3 years ago
6 0

Answer:

110

Step-by-step explanation:

easy matth to me

tip:22÷1/5 is 22x5

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A radio is on sale for $76.50 at a 15% discount. What was the original selling price?
Colt1911 [192]

Answer:

87.975

Step-by-step explanation:

76.5 x 15% = 11.475

76.5 + 11.475 = 87.975

4 0
2 years ago
? Do you believe you have a certain mindset when confronted with a math<br> ?
LenaWriter [7]

Answer: no

Step-by-step explanation:

8 0
3 years ago
Set up but do not solve for the appropriate particular solution yp for the differential equation y′′+4y=5xcos(2x) using the Meth
taurus [48]

Answer:

So, solution of  the differential equation is

y(t)=-\frac{5x^2}{4}\cot 2x\cdot \cos  2x+c_1e^{-2it}+c_2e^{2it}\\

Step-by-step explanation:

We have the given differential equation: y′′+4y=5xcos(2x)

We use the Method of Undetermined Coefficients.

We first solve the homogeneous differential equation y′′+4y=0.

y''+4y=0\\\\r^2+4=0\\\\r=\pm2i\\\\

It is a homogeneous solution:

y_h(t)=c_1e^{-2i t}+c_2e^{2i t}

Now, we finding a particular solution.

y_p(t)=A5x\cos 2x\\\\y'_p(t)=A5\cos 2x-A10x\sin 2x\\\\y''_p(t)=-A20\sin 2x-A20x\cos 2x\\\\\\\implies y''+4y=5x\cos 2x\\\\-A20\sin 2x-A20x\cos 2x+4\cdot A5x\cos 2x=5x\cos 2x\\\\-A20\sin 2x=5x\cos 2x\\\\A=-\frac{x}{4} \cot 2x\\

we get

y_p(t)=A5\cos 2x\\\\y_p(t)=-\frac{5x^2}{4}\cot 2x\cdot \cos  2x\\\\\\y(t)=y_p(t)+y_h(t)\\\\y(t)=-\frac{5x^2}{4}\cot 2x\cdot \cos  2x+c_1e^{-2it}+c_2e^{2it}\\

So, solution of  the differential equation is

y(t)=-\frac{5x^2}{4}\cot 2x\cdot \cos  2x+c_1e^{-2it}+c_2e^{2it}\\

7 0
3 years ago
Plot the points and decide if the rectangular cakes are scale drawings of each other.
pentagon [3]

Answer:

1 side would be 4.0, then the next 4.0, the very botton is a 90 degree

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Please someone help, give the right answer it’s important
KonstantinChe [14]

Step-by-step explanation:

Please see the attached picture and I hope I have given the right answer.

5 0
3 years ago
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