2 years ago

I need help on this i don't understand this. plz help with steps plz. thanks!!

Mathematics

1 answer:

Vlad1618 [11]2 years ago

3 0

I know the answer but do i have to show you their phone numbers and send it out on the bay on open mic or no no

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How do you solve 5x-2y= 18 and -5x+3y= -22 by solving a system of linear equations by elimination? Please add the steps in which

MaRussiya [10]

Write the 2 equations:

5x-2y=18
-5x+3y=-22

You can see that the coefficients of x are opposites, so you can add them(the 2 equations) to eliminate x.

Adding them, you get:

y=-3

So now that you know y, you can substitute the value of y into one of the original equations. Let's substitute it in the first one:

5x+6=18

Solving this, we get:

5x=12
x=12/5

x=12/5, y=-3

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A gallon of orange juice costs $5.50 per gallon. What is the cost per cup of orange juice? What is the cost per fluid ounce of o

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Step-by-step explanation:

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Neil has 3 partially full cans of white paint. They contain 1/3 gallon, 1/5 gallon and 1/2 gallon of paint. About how much paint

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2 years ago

Can someone help me

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2 years ago

A. Find y in terms of x if ????y????x=x6y−7 and y(0)=4. y(x)= (8/7x^7+4^8)^(1/8) . B. For what x-interval is the solution define

topjm [15]

Answer:

Step-by-step explanation:

part A)

given

$x=x6y-7$

so y in terms of x would be

$y=(x+7)/x6$

part b)

in order to find intervals of function, we determine the intervals where the function has a positive first derivative . To find intervals, first we find the critical values, or points at which the first derivative of the function is equal to zero. For the given function the intervals would be

put zero in equation

$y=(x+7)/6x$

$y= infinity$

put 1

$y=1.333$

put 2

$y= 0.75$

put 3

$y= 0.555$

hence we can see that the interval is from zero to positive infinity

(PINF)

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3 years ago