Hi there!
Unit rates are basically changes expressed as a quantity of one. For example, if we have something like 100 feet per second or 2 meters per hour, those are unit rates. In this case, we have a multiple-unit rate - 3 1/2 miles in 1 1/4 hours. First off, we need to simplify both fractions to an improper fraction, giving us 7/2 miles and 5/4 hours. Now, we need to divide 7/2 by 5/4.
7/2 ÷ 5/4
Find the reciprocal of 5/4:
7/2 × 4/5
Multiply:
28/10 → 2.8
Therefore, Jungkook walks 2.8 miles in one hour, or 2.8 mi/hour. Hope this helped!
Please, you need to help yourself by looking up the meaning of these terms: mean, median, mode, range FIRST. How else will you know what you're looking for?
Example: Find the mean of the integers 34 33 35 33 32 35 34 32. To do this, just add them up, count how many you have, and then divide your sum by that count.
Example: Find the median of the integers 34 33 35 33 32 35 34 32. First, arrange these integers in ascending order: 32 32 33 33 34 34 35 35. Second, count them: I see 8 integers. Third, find the median: It's the average of the middle two integers: (33+34)/2 = 33.5
At 2 minutes, the heart would beat 140 times.
700/10=70
140/70=2
Okay, so your scale rectangle has a length of l = 8.2 cm. The actual triangle has a length of L = 41 cm. What is the scale factor? You find out by dividing the scale rectangle l from the actual rectangle L.
41 cm / 8.2 cm = 5
The scale factor is 5. That means the actual rectangle is exactly 5 times bigger than the scale rectangle. Now finding the width is easy! If the width of the scale rectangle is 2.1 cm and the scale factor is 5, you just multiply them together!
2.1 cmx 5 = 10.5 cm
The width of the actual rectangle is 10.5 cm! Hope that helps!
