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2 years ago

Who’s right? And why?

Mathematics

2 answers:

erastova [34]2 years ago

5 0

Answer:

Oscar is right because if you divided the cost by the amount in lbs for each row in the table to find the unit rate, it would equal to 3.99.

Digiron [165]2 years ago

3 0

Answer:

Oscar is. dividing the cost by the amount you will find that all answers equal 3.99

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Evaluate the limit as x goes to infinity of x^3e^-x/5

jekas [21]

Answer: 0

Step-by-step explanation:

$\frac{x^{3}e^{-x}}{5}$

This could be written as

$\frac{x^{3} }{5e^{-x} }$

Applying L'H rule and differentiating 3 times , we have

$\frac{6}{5e^{x} }$

taking the limit as x goes to infinity , we have

5 0

3 years ago

2x + 5y = 19<br> y = 3x - 3<br> Solve for x and y

ozzi

I dont know if i did this right but here

x1 = 9.5 y1 = 0

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2 years ago

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3 years ago

Solve the system y=x²-2 and x²+y=4.Illustrate graphically.

lawyer [7]

Answer:

Solution: $(-\sqrt{3},1),(\sqrt{3},1)$

Step-by-step explanation:

System of equation:

$y=x^2-2\text{ and }x^2+y=4$

Using substitution method.

$y=x^2-2$ substitute into $x^2+y=4$

$x^2+x^2-2=4$ (combine like term)

$2x^2=4+2$ (Addition property of equality)

$2x^2=6$ (division property of equality)

$x^2=3$ (Taking square root)

$x=\pm \sqrt{3}$

Substitute x into $y=x^2-2$

$y=(\sqrt{3})^2-2$

$y=1$

Solution: $(-\sqrt{3},1),(\sqrt{3},1)$

Now cross check the solution using graph.

Please find attachment for graph.

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3 years ago

The ordered pair for the equation 3y-2x=12 is:

Afina-wow [57]

Answer:

x=3/2y-6

Step-by-step explanation:

3y=2x=12

-3y -3y

-2x=-3y+12

^divided by -2 on both sides

x=3/2y-6

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3 years ago