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1 year ago

What is the value of the expression below when x equals 5 6x3^ + 8x

Mathematics

1 answer:

Ghella [55]1 year ago

3 0

790

1) Since it's been given the expression 6x³+8x, let's plug into that the value for x=5

6x³+8x Plug into that x =5

6(5)³+8(5)

6(125) +8(5) Distribute the factors

790

2) So the answer is 790

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Inessa05 [86]

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3 years ago

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Show ALL your calculations.

Nesterboy [21]

Answer:

<DEB= 125 degrees

Step-by-step explanation:

To get this, you would need to know all 2 angles of the triangle.

To find the first angle, simply do 180-107 to get 73(because supplementary angles add up to 180 degrees).

Next, 180-52(given angle)-73 to get 55 because the 3 angles of a triangle add up to 180(triangle angle sum theory).

You would see that <DEB is part of another supplementary angle so, do 180-55 to get 125.

<DEB=125 degrees.

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3 years ago

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Consider the differential equation: xy′(x2+7)y=cos(x)+e3xy. Put the differential equation into the form: y′+p(x)y=g(x), determin

icang [17]

Answer:

Linear and non-homogeneous.

Step-by-step explanation:

We are given that

$\frac{xy'}{(x^2+7)y}=cosx+\frac{e^{3x}}{y}$

We have to convert into y'+P(x)y=g(x) and determine P(x) and g(x).

We have also find type of differential equation.

$y'=\frac{(x^2+7)y}{x}(cosx+\frac{e^{3x}}{y}}$

$y'=\frac{(x^2+7)cosx}{x}y+\frac{(x^2+7)e^{3x}}{x}$

$y'-\frac{cosx(x^2+7)}{x}y=\frac{e^{3x}(x^2+7)}{x}$

It is linear differential equation because this equation is of the form

y'+P(x)y=g(x)

Compare it with first order first degree linear differential equation

$y'+P(x)y=g(x)$

$P(x)=-\frac{cosx (x^2+7)}{x},g(x)=\frac{e^{3x}(x^2+7)}{x}$

$\frac{dy}{dx}=\frac{(x^2+7)(ycosx+e^{3x})}{x}$

Homogeneous equation

$\frac{dy}{dx}=\frac{f(x,y)}{g(x,y)}$

Degree of f and g are same.

$f(x,y)=(x^2+7)(ycosx+e^{3x}),g(x,y)=x$

Degree of f and g are not same .

Therefore, it is non- homogeneous .

Linear and non-homogeneous.

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3 years ago

Slope-intercept intro What is the slope of y = -1 + 3x?

miss Akunina [59]

Answer:

look up something called desmos and type in the equation

Step-by-step explanation:

7 0

4 years ago

Read 2 more answers

L.c.m of 21,24,26 what is it plz I need answers

S_A_V [24]

Answer:

LCM of 21,24 and 26 is 2184

Step-by-step explanation:

We need to find LCM of 21,24 and 26

For finding LCM divide the given numbers by a prime number if two of the numbers are divisible by that prime number

2 | 21,24,26

2 | 21,12,13

2 | 21,6,13

3 | 21,3,13

7 | 7,1,13

13 | 1,1,13

| 1,1,1

So, LCM of 21,24 and 26 is: 2 x 2 x 2 x 3 x 7 x 13 = 2184

8 0

3 years ago