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Natali5045456 [20]
3 years ago
13

If you want to find the answer to a question about grammar, usuage, or mechanics, for your formal writing, which professional re

source would not be helpful?
A. Essential idioms in English
B. The Chicago Manual of Style
C. A Manual for Writers of Reasearch papers, theses, and dissertations
D. MLA handbook for Writers of Reasearch Papers
Mathematics
2 answers:
Leto [7]3 years ago
6 0
A is the correct answer

Neko [114]3 years ago
5 0
A. Because idioms would not help you
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The sum of 8 times a number and 7 equals 9!
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Find the linear approximation of the function f(x, y, z) = x2 + y2 + z2 at (4, 4, 7) and use it to approximate the number 4.022
miss Akunina [59]

Answer:

80.66

Step-by-step explanation:

L\left( x \right) = f\left( a \right) + f'\left( a \right)\left( {x - a} \right)

f(x, y, z) = x^2+y^2+z^2

Since we have three variables,

L(x, y,z) = f(a, b,c) + f_x (a, b,c) (x - a) + f_y (a, b,c) (y - b) +f_z(a,b,c)(z-c)

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