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ser-zykov [4K]
4 years ago
15

I need help asap please ​

Mathematics
1 answer:
faust18 [17]4 years ago
3 0

Answer:

y=3x+6, y=5x,

Step-by-step explanation:

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Please answer I'm begging !!!
Maurinko [17]

Answer:

K=3,052

Step-by-step explanation:

18,010-14,958=3,052

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One common example for you

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Sarah can shoe 12 horses in 3 hour. If she charges $50 per horse, how much money does she make per hour? (round answer to neares
skelet666 [1.2K]

Answer:

200 per-hour

Step-by-step explanation:

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3 years ago
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Yoo i need help with this stuff
romanna [79]
There are 1760 yards in a mile
2 miles = 3520 yards

he runs 80 yards per practice (4×20)
3520÷80= 44

he needs to do the practice 44 times.

--------------

There are 128 oz in a gallon
he brought two gallons, meaning 256 oz
each cup holds 8 oz

256 ÷ 8 = 32

he can serve 32 cups.
7 0
3 years ago
Let z = ln(x 2 + y), x = ret . and y = ter . Use the Chain Rule to compute ∂z ∂r and ∂z ∂t at the point where (r, t) = (1, 2).\
Natali [406]

By the chain rule,

\dfrac{\partial z}{\partial u}=\dfrac{\partial z}{\partial x}\dfrac{\partial x}{\partial u}+\dfrac{\partial z}{\partial y}\dfrac{\partial y}{\partial u}

where u\in\{r,t\}.

We have component partial derivatives

\dfrac{\partial z}{\partial x}=\dfrac{2x}{x^2+y}=\dfrac{2re^t}{r^2e^{2t}+te^r}

\dfrac{\partial z}{\partial y}=\dfrac1{x^2+y}=\dfrac1{r^2e^{2t}+te^r}

\dfrac{\partial x}{\partial r}=e^t

\dfrac{\partial x}{\partial t}=re^t

\dfrac{\partial y}{\partial r}=te^r

\dfrac{\partial y}{\partial t}=e^r

Putting the appropriate pieces together and setting (r,t)=(1,2), we get

\dfrac{\partial z}{\partial r}(1,2)=\dfrac{2e^3+2}{e^3+2}

\dfrac{\partial z}{\partial t}(1,2)=\dfrac{2e^3+1}{e^3+2}

3 0
3 years ago
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