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3 years ago

3=7-2(3z+2) How to solve

Mathematics

1 answer:

attashe74 [19]3 years ago

3 0

Answer: z = 0 | Equation is not solvable

Step-by-step explanation:

We have 3 = 7 - 2(3z + 2)

When we distribute the 2, we get: -6z - 4 + 7 = 3

Combine like terms: -6z + 3 = 3

Subtract the left hand side 3 from the right hand side 3: -6z = 0

We can not divide by zero thus the equation is not solvable.

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Let f(x) = 13 - |2x+ 1|. Find all x for which f(x) less than or equal to 14

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Answer:

$x \leqslant -1\: or \: x \geqslant - 1$

Step-by-step explanation:

The given function is

$f(x) = 13 - |2x + 1|$

We want to find all values of x for which:

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This implies;

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Subtract 13 from both sides;

$- |2x + 1| \geqslant 14 - 13$

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By definition of the absolute value function,

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-3x - 3y = 3<br> y = -5x - 17 <br> (solve by substitution)

kakasveta [241]

Answer:

X = -4, y = 3

Step-by-step explanation:

Plug it in

-3x - 3(-5x - 17) = 3

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plug it in to find y

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