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stiv31 [10]
3 years ago
10

Please help. Solve 2x - 8 < 7.

Mathematics
2 answers:
kotegsom [21]3 years ago
4 0

ANSWER

The correct answer is C

EXPLANATION

The given inequality is:

2x - 8  \: <  \: 7

Group the constant terms on the right hand side to get;

2x \: <  \: 7 + 8

Simplify the right hand side

2x \: <  \: 15

Divide both sides by 2

x \: <  \:  \frac{15}{2}

{x|x<15/2}

The correct answer is C

hram777 [196]3 years ago
4 0

Answer:

\large\boxed{\left\{x\ |\ x

Step-by-step explanation:

2x-8

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Answer:

50 kg water.

Step-by-step explanation:

We have been given that the number of kilograms of water in a human body varies directly as the mass of the body.

We know that two directly proportional quantities are in form y=kx, where y varies directly with x and k is constant of variation.

We are told that an 87​-kg person contains 58 kg of water. We can represent this information in an equation as:

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\frac{29*2}{29*3}=k

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The equation y=\frac{2}{3}x represents the relation between water (y) in a human body with respect to mass of the body (x).

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3 years ago
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Step-by-step explanation:

x

2

+

x

−

6

=

(

x

+

3

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(

x

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x

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(

x

−

4

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(

x

+

1

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Each of the linear factors occurs precisely once, so the sign of the given rational expression will change at each of the points where one of the linear factors is zero. That is at:

x

=

−

3

,

−

1

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2

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4

Note that when

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Hence the sign of the value of the rational expression in each of the intervals

(

−

∞

,

−

3

)

,

(

−

3

,

−

1

)

,

(

−

1

,

2

)

,

(

2

,

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)

and

(

4

,

∞

)

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+

−

+

−

+

. Hence the intervals

(

−

3

,

−

1

)

and

(

2

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4

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When

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−

1

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=

4

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)

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