Which strategy would you use to find 2+8? a) doubles plus 1. b)count on. c) doubles. d) doubles minus 1

Find the second partial derivatives of the following functions

artcher [175]

(a) z = 3x ² - 4xy + 15y ²

has first-order partial derivatives

∂z/∂x = 6x - 4y

∂z/∂y = -4x + 30y

and thus second-order partial derivatives

∂²z/∂x ² = 6

∂²z/∂x∂y = -4

∂²z/∂y∂x = -4

∂²z/∂y ² = 30

where ∂²z/∂x∂y = ∂/∂x [∂z/∂y] and ∂²z/∂y∂x = ∂/∂y [∂z/∂x].

(b) z = 4x eʸ

∂z/∂x = 4eʸ

∂z/∂y = 4x eʸ

∂²z/∂x ² = 0

∂²z/∂x∂y = 4eʸ

∂²z/∂y∂x = 4eʸ

∂²z/∂y ² = 4x eʸ

(c) z = 6x ln(y)

∂z/∂x = 6 ln(y)

∂z/∂y = 6x/y

∂²z/∂x ² = 0

∂²z/∂x∂y = 6/y

∂²z/∂y∂x = 6/y

∂²z/∂y ² = -6x/y ²

6 0

3 years ago

For a few months, the function f(x) = 15(3)^x represented the number of bees in a new hive x months from the time it was started

Brut [27]

I had the same problem. It's C.

6 0

3 years ago

Read 2 more answers

Please help me undertsand this question.

Ghella [55]

So basically, you want to show why the two lines (m and n ) are the "same". To show this you would say <4 &<5 are also supplementary because it is the same as <3 & <6. I think this is what the question is asking. To prove this you use the Converse Theorem. Which is what I just showed you with the angles.

7 0

3 years ago

Wil has a coin collection and is currently adding 9 coins per day to his existing number of coins in his collection.After 22 day

ira [324]

Answer:

344

Step-by-step explanation:

Number of coins added per day in the collection = 9

Number of coins in the collection after 22 days = 218

To find:

Number of coins in the collection after 36 days.

Solution:

First of all, let us find how many coins did he have initially.

Let the number of coins present initially with Wil = $x$

Number of coins added per day = 9

Number of coins added after 22 days = 22 $\times$ 9 = 198

Therefore,

$x + 198 = 218\\\Rightarrow x = \bold{20}$

Number of coins present with Wil initially = 20

Number of coins added after 36 days = 36 $\times$ 9 = 324

Total number of coins after 36 days = Number of coins present initially with Will + Number of coins added = 324 + 20 = 344

7 0

3 years ago

To the nearest whole number 373.26

il63 [147K]

Answer:

373

Step-by-step explanation:

I think thats correct i hope. Im really sorry if it isnt im still learning this in math right now

5 0

3 years ago