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1 answer:
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Answer:
B-The graph is incorrect. He should have shaded to the right of –8.
Step-by-step explanation:
We examine the steps Alfonso follows in graphing the inequality x > -8.
Step 1: Draw a number line, and place an open circle at –8.
A number line going from negative 13 to negative 3. An open circle is at negative 8.
The first step is correct, since we use an open circle for > or < and a closed circle for .
Step 2: Shade to the left of –8 to represent the infinite solutions to x greater-than negative 8.
This step is incorrect since <u>values to the left are always less than.</u>
He should have shaded to the right of -8.
<u>The error made is Option B. </u>
CHECK:
x=-7
-7>-8 (TRUE)
Answer:
The average speed of an aircraft carrier is 13.89 km/h.
Step-by-step explanation:
We have,
Distance covered by an aircraft carrier is 1000 km
Time taken by the aircraft to travel is 3 days.
It is required to find the average speed of the aircraft.
1 day = 24 hours
3 days = 72 hours
Average speed :
So, the average speed of an aircraft carrier is 13.89 km/h.