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2 years ago

6.83 as a mixed number

Mathematics

2 answers:

valkas [14]2 years ago

5 0

The answer is 6 83/100.

marishachu [46]2 years ago

3 0

6 83/100 is the answer

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Can anyone help me with this one please?!

kirza4 [7]

I think a is 6 and b is -6

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2 years ago

Find the missing angle measure in ABC. A = 118°, B = 23°, C = ____°

Sladkaya [172]

118 + 23 = 141

180 = Triangle

180 - 141 = 39

39 is the answer

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2 years ago

A basketball player made 77 out of 100 attempted free throws. What percentage of free throws was made?

Sloan [31]

Answer:

77%

Step-by-step explanation:

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3 years ago

Read 2 more answers

What percent of people surveyed from San Francisco wear Adidas shoes? Round to the nearest percent when necessary.

Mama L [17]

Answer:

Step-by-step explanation:

Add 165 and 80 to get 245. 80 times 3 = 240.

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2 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