3 years ago

The tabel shows the amount of miles of Cheryl travels 4 each day.About how many miles did she travel during the 4 days?

Mathematics

1 answer:

OLga [1]3 years ago

8 0

4 times 4=16 So in four days, Cheyrl traveled 16 miles.

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The value of the expression StartFraction 2 x squared Over x EndFraction plus x (100 minus 15 x) when x = 5 is

Digiron [165]

Answer:

135.

Step-by-step explanation:

3 0

3 years ago

What is the value of 7x-2x+3,when x=2

borishaifa [10]

Well if x = 2, then you do 7 times 2, which is 14, then 2 times 2 which is 4, then 14 minus 4 is 10, and 10 plus 3 is 13.

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3 years ago

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Solve the differential equation by variation of parameters.<br><br> y''+y=secx

suter [353]

Answer:y=

Acosx+Bsinx +cosx ln(cosx)+x sinx

Step-by-step explanation:

given equation y''+y=secx

auxiliary equation

$p^2+1=0\\p=\pm i$

so CF is y=Acosx+Bsinx

now

$y_1(x)=cosx \ \ \ \ y_2(x)=sinx\\{y_1}'(x)=-sinx \ \ \ \ {y_2}'(x)=cosx$

using wronskian formula

$W=\begin{vmatrix}cosx &sinx \\ -sinx & cosx\end{vmatrix}$

= $cos^2x+sin^2x=1$

now f(x)=secx

$u=-\int \frac{f(x)y_2(x)}{W(x)}dx \ and \ v=\int \frac{f(x)y_1(x)}{W(x)}dx$

$u=-\int \frac{secx\times sinx}{1}dx \ and \ v=\int \frac{secx\times cosx}{1}dx$

$u=-\int tanx dx \ and \ v=\int {1}dx$

$u=ln(cosx) \ \ \ and \ \ v=x$

now particular integrals are

PI=cosx ln(cosx)+x sinx

total solution

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8 0

3 years ago

I need help finding the value of x n y. thank you

rewona [7]

Step-by-step explanation:

Here with reference angle 45°

Hypotenuse ( h) = y

Perpendicular (p) = x

base (b) = 5√2

We know

tan 45° = p/b

1 = x / 5√2

Therefore x = 5√2

Now

h = √(5√2)^2 + 5√2)^2

= √ 50 +50

= √100

= 10

Hope it helped

4 0

3 years ago

Create an equation from the following statement<br> of 15% of 24

Murljashka [212]

15 percent of 24
(15/100) * 24
3.6

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2 years ago