2 years ago

10 po

Mathematics

1 answer:

dedylja [7]2 years ago

3 0

Answer:

the answer is c 0.16

Step-by-step explanation

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1 pt) If a parametric surface given by r1(u,v)=f(u,v)i+g(u,v)j+h(u,v)k and −4≤u≤4,−4≤v≤4, has surface area equal to 1, what is t

natta225 [31]

The area of the surface given by $\vec r_1(u,v)$ is 1. In terms of a surface integral, we have

$1=\displaystyle\int_{-4}^4\int_{-4}^4\left\|\frac{\partial\vec r_1(u,v)}{\partial u}\times\frac{\partial\vec r_1(u,v)}{\partial v}\right\|\,\mathrm du\,\mathrm dv$

By multiplying each component in $\vec r_1$ by 5, we have

$\dfrac{\partial\vec r_2(u,v)}{\partial u}=5\dfrac{\partial\vec r_1(u,v)}{\partial u}$

and the same goes for the derivative with respect to $v$ . Then the area of the surface given by $\vec r_2(u,v)$ is

$\displaystyle\int_{-4}^4\int_{-4}^425\left\|\frac{\partial\vec r_1(u,v)}{\partial u}\times\frac{\partial\vec r_1(u,v)}{\partial v}\right\|\,\mathrm du\,\mathrm dv=\boxed{25}$

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2 years ago

Elsie is going to flip a coin and spin a spinner. The coin has a heads and a tails. The spinner has four equal parts that are ye

Vedmedyk [2.9K]

Answer:

1/6

Step-by-step explanation:

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2 years ago

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Emma needs to earn at least $250 a week during her summer break to pay for college. She works two jobs, one at a gas station tha

ANTONII [103]

Answer:

x×25+y×14.5( greater than or equal to symbol)250

4 0

2 years ago

HELP ASAP what is the value of x enter your answer in the box

Alexxx [7]

Answer:

x=25

Step-by-step explanation:

24²+7²=625

√625= 25

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2 years ago

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2) two florist purchased flower bouquets and vases at the same store. The first florist bought 2 flower bouquets and two vases f

Feliz [49]

Let
b---------> the cost of one flower bouquet
v--------> the cost of one vase.

we know that
2b+2v=12.50-----> Multiplied by -1------------->-2b-2v=-12.50
8b+2v=29---------------------------------------------> 8b+2v=29
I add the two equations ------------------------
6b=16.50
b=2.75
2*2.75+2*v=12.50---------------> v=(12.50-5.5)/2---------> v=3.5

the answer is
the cost of one flower bouquet is $2.75
the cost of one vase is $3.5

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2 years ago