3 years ago

Evaluate the expression when x=2.3, y= -1.6, and z= -4. x-y+z

Mathematics

2 answers:

Mandarinka [93]3 years ago

6 0

Answer:

-.01

Step-by-step explanation:

X - Y + Z

2.3 - (-1.6) + (-4)

2.3 + 1.6 - 4

-0.1

I hope this is helpful!!!!!!! :)

lana [24]3 years ago

5 0

Answer:

-0.1

Hope this helped :)

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simplify the expression write your answer as a complex number. three square root of 16 plus square root of - 9

german

Answer:

$\large\boxed{3\sqrt{16}+\sqrt{-9}=12+3i}$

Step-by-step explanation:

$3\sqrt{16}+\sqrt{-9}\\\\\sqrt{16}=4\ \text{because}\ 4^2=16\\\\\sqrt{-9}=\sqrt{(9)(-1)}\qquad\text{use}\ \sqrt{ab}=\sqrt{a}\cdot\sqrt{b}\\=\sqrt9\cdot\sqrt{-1}=(**)\\\sqrt9=3\ \text{because}\ 3^2=9\\\sqrt{-1}=i\\(**)=3i\\\\3\sqrt{16}+\sqrt{-9}=(3)(4)+3i=12+3i$