Answer:
Step 1: Put the numbers in order. ...
Step 2: Find the median. ...
Step 3: Place parentheses around the numbers above and below the median. Not necessary statistically, but it makes Q1 and Q3 easier to spot. ...
Step 4: Find Q1 and Q3. ...
Step 5: Subtract Q1 from Q3 to find the interquartile range.
Explanation: This rate means for every 1 hour she worked, she earned 12 dollars.
To find how long it took for her to earn 228 dollars, you have to:
1. Divide 228 by 12
2. Answer - 19
Julie worked 19 hours and earned $228.
area of rectangle = L x w
area = 8 sq ft
w= L-2
so 8 = L *L-2
8 = l^2-2l
l^2 -2l-8 = 0
(l-4) (l+2)=0
Length = 4 feet
Width = 2 feet
Answer:
ft³
Step-by-step explanation:
First, let's figure out how to get the <em>volume </em>of a sphere from its <em>surface area</em>. If r is the radius of our sphere, then
The formula for a sphere's surface area is
The formula for a sphere's volume is
So to get from area to volume, we have to <em>divide the area by 3 </em>and then <em>multiply it by r.</em> Mathematically:
Before we solve for V though, we need to find the radius of our sphere. Thankfully, we're given the surface area - ft² - so we can use the area formula to find that radius:
And now that we have our radius, we can put it into our volume formula to find
ft³