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4 years ago

PLEASE HELP Is this ordered pair a solution to this inequality. (1,3) x + y + < 10

Mathematics

1 answer:

ipn [44]4 years ago

3 0

Answer:

Step-by-step explanation:

hello :

(1,3) is solution for x + y < 10 because when x=1 and y=3

1+3< 10 ....right

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In Exercise, find the derivative of the function.<br> y = 3ex - xex

nevsk [136]

Answer:

the question is incomplete, the complete question is "find the derivative of the function $y=3e^{x}-xe^{x}$ "

answer: $\frac{dy}{dx}=(2-x)e^{x}$ .

Step-by-step explanation:

From the equation, $y=3e^{x}-xe^{x}$ , we approach the question using the differentiation of a product and differentiation of a sum simultaneously,

the differentiation of a sum is express as

f(x)=u(x)+v(x)+.....w(x) then

$\frac{df(x)}{dx}=\frac{du(x)}{dx}+\frac{dv(x)}{dx}+...\frac{dw(x)}{dx}.\\$

For the differentiation of a product we have

f(x)=u(x)v(x), then

$\frac{df(x)}{dx}=\frac{dv(x)}{dx}u(x)+\frac{du(x)}{dx}v(x)$

hence if we go by the formula we arrive at

for $y=3e^{x}$

let u(x)=3 hence du/dx=0 and

$v(x)=e^{x}$ and $\frac{dv(x)}{dx}=e^{x}$

hence $\frac{dy}{dx}=3e^{x}+0e^{x}\\\frac{dy}{dx}=3e^{x}---equation 1\\$

Also for $y=-xe^{x}\\\frac{dy}{dx}=-e^{x}-xe^{x}---equation 2$ .

if we add equation 1 and equation 2 we arrive at

$\frac{dy}{dx}=3e^{x}-e^{x}-xe^{x}\\\frac{dy}{dx}=(3-1-x)e^{x}\\\frac{dy}{dx}=(2-x)e^{x}$ .

4 0

3 years ago

Given that x is an even number, express, in terms of x, the product of the next two odd numbers.

wariber [46]

Answer:

Odd is the answer.

Step-by-step explanation:

An even number can be written in the form 2x, where x is an integer.

An odd number can be written in the form 2x + 1, where x is an integer.

So two odd numbers can be represented by 2a +1 and 2b +1, the product would be:

(2a + 1)(2b +1) = 4ab + 2a + 2b + 1 = which can be written as 2(2ab + a +b) + 1, but 2ab +a + b represents some integer, so 2ab + a + b = x.

So (2a + 1)(2b + 1) = 2(2ab + a + b ) + 1 = 2x +1 which is odd.

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3 years ago

Which of the following is true?

Illusion [34]

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The Correct choice is :

RT is an altitude of Triangle QRS

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3 years ago

Rewrite each equation in slope intersept form to 4x -y=7

Bad White [126]

Answer:

y = 4x-7

Step-by-step explanation:

Slope intercept form is

y = mx+b where m is the slope and b is the y intercept

4x-y = 7

Subtract 4x from each side

-y = -4x+7

Multiply each side by -1

y = 4x-7

4 0

3 years ago

WILL GIVE BRAINLIEST

belka [17]

Answer:

Step-by-step explanation:

sorry if its wrong i tried my best

3 0

3 years ago

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