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Serhud [2]
2 years ago
5

Help me solve for t please

Mathematics
1 answer:
cupoosta [38]2 years ago
8 0
Look at the answer down here please

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If -xy – 5+ y^2+ x^2= 0 and it is known that dy/dx= y-2x/-x+2y, find all
sleet_krkn [62]

Answer:

There is no point of the form (-1, y) on the curve where the tangent is horizontal

Step-by-step explanation:

Notice that when x = - 1. then dy/dx becomes:

dy/dx= (y+2) / (2y+1)

therefore, to request that the tangent is horizontal we ask for the y values that make dy/dx equal to ZERO:

0 = ( y + 2) / (2 y + 1)

And we obtain y = -2 as the answer.

But if we try the point (-1, -2) in the original equation, we find that it DOESN'T belong to the curve because it doesn't satisfy the equation as shown below:

(-1)^2 + (-2)^2 - (-1)*(-2) - 5 = 1 + 4 + 2 - 5 = 2  (instead of zero)

Then, we conclude that there is no horizontal tangent to the curve for x = -1.

3 0
3 years ago
What is the vertex form of the function y = x2 + 8x – 3
Scrat [10]

Answer:

y=(x+4)²-19

Step-by-step explanation:

8 0
3 years ago
On this map, Oxford Street is perpendicular to_______ , and Rosewood Street is perpendicular to ________. Assume that the street
melamori03 [73]
Hi there!

We are looking for perpendicular angles, which means the angle between the streets is 90 degrees. So, each time we need to find the street that intersects the given street with a 90 degree angle.

On this map, Oxford Street is perpendicular to Waterloo St., and Rosewood Street is perpendicular to Oak St..

The answers are (in correct order): Waterloo St. and Oak St..
~ Hope this helps you!
6 0
3 years ago
Amy has 2$, Jack has 3 times as much as Amy. Catherine has twice as much as Jack. How much does Catherine have?
worty [1.4K]
Catherine has 12.

2 times 3 is 6. 6 times 2 is 12. Final answer is 12.
4 0
3 years ago
Read 2 more answers
Simplified -\15| <br> How do you simplify this ?
Zina [86]

Answer -15 because it would be 15 but the negative would be turned into a negative again

4 0
3 years ago
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