Find the student's error in solving the following

Mathematics

2 answers:

Sliva [168]3 years ago

7 0

Answer:

"The student should have switched the direction of the inequality sign to get –5> x for a final answer."

and the second one is:

The student should have added 4 to all parts (left, middle, and right) to get 6 < –3x < 9.

Step-by-step explanation:

i got that on edge

zheka24 [161]3 years ago

5 0

x>7

Step-by-step explanation:

when dividing by a (-)

the inequality sign changes

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<h3>What are Complex numbers?</h3>

A complex number is the sum of a real number and an imaginary number. A complex number is of the form a + ib and is usually represented by z. Here both a and b are real numbers. The value 'a' is called the real part which is denoted by Re(z), and 'b' is called the imaginary part Im(z).