3 years ago

Solve each inequality and graph the solution set

Mathematics

1 answer:

mixas84 [53]3 years ago

4 0

Answer:

A. line at -1 and 1 and -2<_ x<_1

B. c>-1 and line from -1 all the way to 5 and c<4 and line from 4 all the way to-5

C. y<3 and line from 3 to 5 and 7_>-4 and line from-4 to 5

Step-by-step explanation:

The greater than and less than sign is supposed to be over the Lines

Those are greater than and less than signs

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The numbers a, b and c satisfy a+b+c = 0 and abc = 78. What is the value of (a+b)(b+c)(c+a)?

djyliett [7]

Answer:

$(a+b)(b+c)(c+a)=-78$

Step-by-step explanation:

We are given that the numbers a, b and c

$a+b+c=0$ ....(1)

$abc=78$ ..... (2)

We have to find the value of (a+b)(b+c)(c+a).

From equation we get

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$b+c=-a$

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Substitute the values then we get

$(a+b)(b+c)(c+a)=(-c)(-a)(-b)$

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Using equation (2) we get

$(a+b)(b+c)(c+a)=-78$

Hence, the value of $(a+b)(b+c)(c+a)$ is -78.

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