The reasonable estimates are indicated in the following choices:
A) 1 foot
B) 2 feet
C) 5 feet
D) 9 feet
So, from the given choices, 2 feet or approximately 24
inches would be the most viable answer because most standard desks have a
height around 28 inches to 30 inches. 1 foot is too low, while 5 feet and 9
feet are too high. Therefore, 3 to 4 feet would be the most perfect answer but
since we have a limited number of options, the nearest reasonable estimate
value would be 2 feet. <span>The original numbers from a problem does not exceed in a reasonable
estimate.</span>
Answer:
we have to add (-b) to get (a)
Step-by-step explanation:
a+b+(-b)=a
a+b-b=a
a=a
Hence verified.
Hope this helps you. Have a nice day^_^
Answer:
- 45 regular keyboards
- 15 wireless keyboards
Step-by-step explanation:
A set of 3 regular and 1 wireless keyboard would sell for ...
3×$83 +110 = $359
For the given sales, the number of sets sold was ...
$5385/($359/set) = 15 sets
Since there are 3 regular keyboards in each set, there were 3×15 = 45 regular keyboards sold. The number of each type of keyboards sold is ...
45 regular keyboards and 15 wireless keyboards
_____
<em>Comment on this solution</em>
When a problem statement tells you the ratio of one kind of item to another, it is often convenient to group the items in that ratio and deal with the groups. Sometimes, there will be a few missing or left over, for example "10 more than 3 times as many." In those cases, you can make an adjustment to the total and still deal with the groups. (Any equations you might write will effectively do this same thing.)
