Which compound inequality can be used to solve the inequality |3x+2|>7? -7<3x+2>7 -7>3x+2>7 3x + 2 > –7 or 3x
2 answers:
Answer:
or
Step-by-step explanation:
we have
Divide the absolute value inequality into two inequalities
<em>First inequality</em> (positive value)
<em>Second inequality</em> (negative value)
Multiply by -1 both sides
Remember that when you multiply or divide both sides of an inequality by a negative number, you must reverse the inequality symbol
so
therefore
The compound inequality that can be used is
or
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Answer:
Step-by-step explanation:
We have been given that at a zoo, the lion pen has a ring-shaped sidewalk around it. The outer edge of the sidewalk is a circle with a radius of 11 m. The inner edge of the sidewalk is a circle with a radius of 9 m.
To find the area of the side walk we will subtract the area of inner edge of the side walk of lion pen from the area of the outer edge of the lion pen.
, where r represents radius of the circle.
Therefore, the exact area of the side walk is
To find the approximate area of side walk let us substitute pi equals 3.14.
Therefore, the approximate area of the side walk is .