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4 years ago

Is this 55 percent if not can you help me

Mathematics

2 answers:

Helga [31]4 years ago

7 0

there are 10rows and 10 columns of squares.

4 rows are completely black so adds 40, plus 3 of them are colored to 6 blocks, so adds 3*6=18

58 of 100 is 58%

Anna11 [10]4 years ago

4 0

Step-by-step explanation:

<u>Step 1: Find the percent shaded</u>

<em>Count how many shaded blocks are there: </em> 58 shaded

<em>Count how many un-shaded blocks are there: </em> 42 un-shaded

<em>To find the percent shaded: </em>

Amount Shaded / Total Blocks

58 / 100

0.58 * 100

58% is shaded

Answer: 58% is shaded

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D^2(y)/(dx^2)-16*k*y=9.6e^(4x) + 30e^x

MA_775_DIABLO [31]

The solution depends on the value of $k$ . To make things simple, assume $k>0$ . The homogeneous part of the equation is

$\dfrac{\mathrm d^2y}{\mathrm dx^2}-16ky=0$

and has characteristic equation

$r^2-16k=0\implies r=\pm4\sqrt k$

which admits the characteristic solution $y_c=C_1e^{-4\sqrt kx}+C_2e^{4\sqrt kx}$ .

For the solution to the nonhomogeneous equation, a reasonable guess for the particular solution might be $y_p=ae^{4x}+be^x$ . Then

$\dfrac{\mathrm d^2y_p}{\mathrm dx^2}=16ae^{4x}+be^x$

So you have

$16ae^{4x}+be^x-16k(ae^{4x}+be^x)=9.6e^{4x}+30e^x$
$(16a-16ka)e^{4x}+(b-16kb)e^x=9.6e^{4x}+30e^x$

This means

$16a(1-k)=9.6\implies a=\dfrac3{5(1-k)}$
$b(1-16k)=30\implies b=\dfrac{30}{1-16k}$

and so the general solution would be

$y=C_1e^{-4\sqrt kx}+C_2e^{4\sqrt kx}+\dfrac3{5(1-k)}e^{4x}+\dfrac{30}{1-16k}e^x$

8 0

3 years ago

Solve the system by substitution.<br> y = 82<br> y = 4x + 8

koban [17]

Answer:

2, 16

Step-by-step explanation:

4 0

3 years ago

Can anybody help me with this?

Alex787 [66]

Answer:

Step-by-step explanation:

The rate of change for the table is found using the slope formula. The rate of change for the linear function is the coefficient of x.

<h3>table</h3>

The slope formula tells us the rate of change is ...

m = (y2 -y1)/(x2 -x1)

m = (-9 -(-10))/(-1 -(-4)) = 1/3

<h3>equation</h3>

The coefficient of x in the equations of the offered answer choices are 1/4 and 6.

<h3>comparison</h3>

The relations between the various slopes are ...

1/4 < 1/3 < 6

That is, the equation with a slope of 1/4 has a rate of change less than that of the function represented by the table:

y = 1/4x +4 because ... table of values is 1/3

6 0

2 years ago

What is $3577.0398457656 rounded to the nearest cent?

gizmo_the_mogwai [7]

Answer:

3,577

Step-by-step explanation:

7 0

3 years ago

Simplify.12x • 3x15 x15 x236 x236 x

sdas [7]

In order to simplify this expression, we need to multiply the numeric values together and the variables together.

So we have:

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Therefore the correct option is the third one.

6 0

2 years ago