-2x < -6

Mathematics

1 answer:

Soloha48 [4]3 years ago

8 0

Answer:

x > 3

Step-by-step explanation:

This is based on the concept 'when a negative number is multiplied to both sides of the inequality, the sign gets reversed. For example, x > - 2 when it is multiplied by - 1, it becomes - x < 2.'

*only when the number is -ve.

Similarly, in this question, multiply both sides by - 1.

2x > 6

x > 6/2

x > 3

For more : take - 5 > - 2, as you know

Note that 5 is actually greater than 2. To make this true we change signs

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If the cube has a volume of approximately 561.5 cm, what is the approximate area of the cross-section shown?

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Answer:

The area of the cross section of the cube is 68 cm

Step-by-step explanation:

Volume of the cube is $a^{3}$

$a^{3}$ $=$ 561·5 cm $($ Given $)$

a $=$ edge or side of the cube

so, cube root on both the side will be

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