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3 years ago

Find the value of 5x - 2y+ 3z when x = 7 , y = 11 and z = -1

Mathematics

2 answers:

Maslowich3 years ago

8 0

5x-2y+3z=10 thats what I got.

Oksanka [162]3 years ago

7 0

By replacing you get:

5*7-2*11+3*(-1) = 35-22-3= 10

so the answer is 10.

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Makovka662 [10]

Answer:

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Step-by-step explanation:

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3 years ago

X^2+10x+19=0 complete the square PLEASE EXPLAIN

wlad13 [49]

Answer:

Step-by-step explanation

In the form ax^2+bx+c

a x c should equal two factors of b

However, in this equation

1 x 19 has no factors that = 10

so you must use the Quadratic Formula which is,

x = $\frac{-b+-\sqrt{b^2-4ac} }{2a}$

so the answer should be

x = $\frac{-10+-\sqrt{10^2-4(1)(19)} }{2(1)}$

x = $\frac{-10+-\sqrt{24} }{2}$

x = $\frac{-10+2\sqrt{6} }{2}$ and x = $\frac{-10-2\sqrt{6} }{2}$

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3 years ago

Arrange from least to greatest

Irina18 [472]

Answer:

i think b or d

Step-by-step explanation:

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3 years ago

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LenKa [72]

The correct answer is 19,200. Hope this helps. :)

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3 years ago

Read 2 more answers