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netineya [11]
3 years ago
12

Can someone help with this question?

Mathematics
2 answers:
SVEN [57.7K]3 years ago
8 0
= 2x^2 + 5 - 4x + 3
= 2x^2 - 4x + 8

answer is B
elixir [45]3 years ago
5 0
When you subtract flip the signs of the second set.
2x^2+5-4x+3

Now combine like terms
2x^2-4x+8

Final answer: B
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450

Step-by-step explanation:

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Consider the system of linear equations -4x+2y=4 ​ and 4x-y=-6 Which is different
Serjik [45]

Answer:

x= -2, y = -2

Step-by-step explanation:

Solve the following system:

{2 y - 4 x = 4 | (equation 1)

{4 x - y = -6 | (equation 2)

Add equation 1 to equation 2:

{-(4 x) + 2 y = 4 | (equation 1)

{0 x+y = -2 | (equation 2)

Divide equation 1 by 2:

{-(2 x) + y = 2 | (equation 1)

{0 x+y = -2 | (equation 2)

Subtract equation 2 from equation 1:

{-(2 x)+0 y = 4 | (equation 1)

{0 x+y = -2 | (equation 2)

Divide equation 1 by -2:

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Collect results:

Answer:  {x = -2 , y = -2

8 0
3 years ago
The expression 0.07x + (x - 300) models the final price of a television set with an instant rebate in a state that charges a sal
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If h(2)=7 and h'(2)=-2,find d/dx [(h(x))/(x)] <br> A. –11/4 B. 2 C. D. 8 E. 16
valentinak56 [21]

Answer:

A. \frac{-11}{4}

Remember that if f and g are functions with g(x)\neq 0 then, \frac{d}{dx}\frac{f(x)}{g(x)}=\frac{f'(x)g(x)-g'(x)f(x)}{g(x)^2}.

Then,

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Evaluating in x=2,

\frac{h'(2)*2-h(2)}{2^2}=\frac{-4-7}{4}=\frac{-11}{4}

Then the answer is A.

7 0
3 years ago
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