All categories

3 years ago

I need some help on doing these :[ please and thank you ;-;

Mathematics

1 answer:

otez555 [7]3 years ago

5 0

Answer:

is this geometry or algebra

You might be interested in

Suppose that the Celsius temperature at the point (x, y) in the xy-plane is T(x, y) = x sin 2y and that distance in the xy-plane

liraira [26]

Missing information:

How fast is the temperature experienced by the particle changing in degrees Celsius per meter at the point

$P = (\frac{1}{2}, \frac{\sqrt 3}{2})$

Answer:

$Rate = 0.935042^\circ /cm$

Step-by-step explanation:

Given

$P = (\frac{1}{2}, \frac{\sqrt 3}{2})$

$T(x,y) =x\sin2y$

$r = 1m$

$v = 2m/s$

Express the given point P as a unit tangent vector:

$P = (\frac{1}{2}, \frac{\sqrt 3}{2})$

$u = \frac{\sqrt 3}{2}i - \frac{1}{2}j$

Next, find the gradient of P and T using: $\triangle T = \nabla T * u$

Where

$\nabla T|_{(\frac{1}{2}, \frac{\sqrt 3}{2})} = (sin \sqrt 3)i + (cos \sqrt 3)j$

So: the gradient becomes:

$\triangle T = \nabla T * u$

$\triangle T = [(sin \sqrt 3)i + (cos \sqrt 3)j] * [\frac{\sqrt 3}{2}i - \frac{1}{2}j]$

By vector multiplication, we have:

$\triangle T = (sin \sqrt 3)* \frac{\sqrt 3}{2} - (cos \sqrt 3) \frac{1}{2}$

$\triangle T = 0.9870 * 0.8660 - (-0.1606 * 0.5)$

$\triangle T = 0.9870 * 0.8660 +0.1606 * 0.5$

$\triangle T = 0.935042$

Hence, the rate is:

$Rate = \triangle T = 0.935042^\circ /cm$

3 0

3 years ago

Can someone please help me with this ANSWER ASAP!!!!!!!!

Ratling [72]

Answer:

123

Step-by-step explanation:

idk

7 0

3 years ago

Read 2 more answers

Please help me im stuck

Rudiy27

Answer:

41/100

Step-by-step explanation:

7 0

3 years ago

Karla has spent $42 on food. She bought milk, cheese, and meat. The milk cost half as much as the cheese and the meat cost four

Alina [70]

M = milk

C= cheese

X=meat

milk = 0.5c

meat = 4c

cheese = 1c

C= 42/5.5 = 7.64

X = 7.64 x 4 = 30.56

M =7.64 * 0.5 = 4.67

30.56 + 3.82 + 7.64 = approximately $42

4 0

3 years ago

How do you factor x2 + 2xy + y2 -2^4

UNO [17]

Answer:

try this answer x2 + 2xy + y2 - 16

3 0

3 years ago