3 years ago

Solve the system of equations 3x – 2y + 4z = -14 -4x + y + 4z = -16 -3x - y - 4z = 2

Mathematics

1 answer:

Naddika [18.5K]3 years ago

8 0

Answer:

x,y,x = 2,4, -3

Step-by-step explanation:

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180000

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2 years ago

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What happens to the value?

Fiesta28 [93]

Answer:

D.) c is multiplied by 4

Step-by-step explanation:

$c = \dfrac{8a^3}{b}$

If a is doubled, it becomes 2a. If b is doubled, it becomes 2b. Now we replace a with 2a and b with 2b and simplify.

$c = \dfrac{8(2a)^3}{2b}$

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Answer: D.) c is multiplied by 4

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2 years ago

What is the value of the expression |a + b| + |c| when a = –3, b = 7, and c = –15?

nikdorinn [45]

We know:
$|a|= \left\{\begin{array}{ccc}a&if\ a \ \textgreater \ 0\\0&if\ a=0\\-a&if\ a \ \textless \ 0\end{array}\right\\\\|2|=2\\|0|=0\\|-3|=3$

$|a+b|+|c|$
substitute a = -3; b = 7; c = -15
$|-3+7|+|-15|=|4|+15=4+15=19$

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3 years ago