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My name is Ann [436]
2 years ago
14

You have $20 to spend. You buy socks that cost $3 per pair. Write an algebraic expression for the amount of money you have left

after buying s pairs of socks.
Mathematics
2 answers:
Tamiku [17]2 years ago
6 0

Answer: 20-3s

Step-by-step explanation:

20 dollars minus 3 dollars per pair (s)

Black_prince [1.1K]2 years ago
4 0

Answer:

20-3s

Step-by-step explanation:

20-3s

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mart [117]

Answer:

a) The gradient of a function is the vector of partial derivatives. Then

\nabla f=(\frac{\partial f}{\partial x}, \frac{\partial f}{\partial y})=(y,x)=y\hat{i} + x\hat{j}

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\nabla f(P)=(-4,-4)=-4\hat{i} - 4 \hat{j}

c) The directional derivative of f at P in direction of V is the dot produtc of \nabla f(P) and v.

\nabla f(P) v=(-4,-4)\left[\begin{array}{ccc}2\\3\end{array}\right] =(-4)2+(-4)3=-20

d) The maximum rate of change of f at P is the magnitude of the gradient vector at P.

||\nabla f(P)||=\sqrt{(-4)^2+(-4)^2}=\sqrt{32}=4\sqrt{2}

e) The maximum rate of change occurs in the direction of the gradient. Then

v=\frac{1}{4\sqrt{2}}(-4,-4)=(\frac{-1}{\sqrt{2}},\frac{-1}{\sqrt{2}})= \frac{-1}{\sqrt{2}}\hat{i}-\frac{1}{\sqrt{2}}\hat{j}

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3 years ago
Help needed asap!!,.........
Kaylis [27]

Answer:

C: Reflection across the y-axis and a translation right two units.

Step-by-step explanation:

FLVS Geometry, eh? I did that class last year.

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3 years ago
Which correlation coefficient would most likely show a weak negative association?
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Answer:

Step-by-step explanation:

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2 years ago
A lioness has 4 cubs that weigh 1.7 kg, 2.1 kg, 3 kg, and 2.7 kg. Each cub eats 1.25 kg of food a
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Answer:

2.375

Step-by-step explanation:

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Select all expressions that are equivalent to 2+y+y+y+y+y+3?
ryzh [129]
I can’t see your choices, but this equation can be simplified to 5y + 5.

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