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3 years ago

8 gray buttons out of 20 buttons

Mathematics

1 answer:

Nutka1998 [239]3 years ago

7 0

12 buttons. 8-20=12

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PLZ HELP!!!!!!!!!!!!!!!!!!!

nordsb [41]

Points Q and R :) :)

8 0

3 years ago

Xy′ = √(1 − y2 ), y(1) = 0

tigry1 [53]

Answer:

y=sin(ln(x))

Step-by-step explanation:

First, we have to order the terms as follows and express y' as dy / dx:

$x*\frac{dy}{dx} =\sqrt{(1-y^{2} )} \\\frac{x}{dx}=\frac{dy}\sqrt{(1-y^{2} )}}\\\frac{dx}{x}=\frac{dy}{\sqrt{(1-y^{2} )} }$

Then, we have to integrate

$\int{\frac{dx}{x}=\int{\frac{dy}{\sqrt{(1-y^{2} )} }$

with this solution after integration:

$ln(x)+C1=arcsin(y)+C2$

Then, we have to reorder

$arcsin(y)=ln(x)+C$

and applied Sin function on both sides

$sin(arcsin(y))=sin(ln(x)+C)\\y=sin(ln(x)+C)$

To define the value of C, we use the known point y(1)=0 and replace in the equation

$y=sin(ln(x)+C)\\0=sin(ln(1)+C)\\0=sin(0+C)\\0=sin(C)\\C=arcsin(0)\\C=0$

The function that proves that differential equation is

$y=sin(ln(x))$

6 0

3 years ago

Please help<br><br> 3(-21 + k) = 18

Novay_Z [31]

Answer:

K=27

Step-by-step explanation:

3(-21+k)=18

-63+3k=18

3k=18+63

3k=81

K=81/3

K=27

7 0

3 years ago

Read 2 more answers

Please help me on this

Llana [10]

It would be 35 + 8 is 43 because it increases by 8.

8 0

3 years ago

Enter the missing numbers in the boxes to complete the table of equivalent ratios.

laila [671]

Answer:

3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36.

Step-by-step explanation:

4 0

2 years ago