Answer:
70 miles per hour
Step-by-step explanation:
We want to find the average speed. We should find the speed in miles per hour, so we must divide the miles traveled by the hours.
miles/hours
We traveled 280 miles in 4 hours.
280 miles/4 hours
Divide.
70 miles / hour
The average speed is 70 miles per hour.
7. 86° F = 30° C
9. 25° C = 77° F
The maximum possible volume of this type of box that can be made from a 20 cm by 20 cm square of paper is 512cm³.
<h3>How to calculate the volume?</h3>
From the information, when the side of 1cm are cut, this will become an open box. The volume will be:
= 18 × 18 × 1
= 324cm³
Also, when 2cm is cut, the volume will be:
= 16 × 16 × 2
= 512cm³
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Answer: Completing the square changes the value of the equation.
Step-by-step explanation:
For example we have expression :
which is equivalent to
We add and subtract to form a complete square.
, where is a perfect square binomial.
Thus, the true statements about the completing squares are:-
- Completing the square will always work.
- When completing the square you add and subtract the same value to the equation.
- When completing the square you create a perfect square binomial.
Completing the square does not change the value of the equation.