Answer: plane 1: 420 mph; plane 2: 500 mph
Step-by-step explanation:
This is a physics exercise, but in order to solve this problem, you need to identify both planes first:
Let's call the plane 1 speed X
V1 = X
And V2 would be:
V2 = V1 + 80 = X + 80
If we combine both speeds:
V = V1 + V2 = X + X + 80 = 2X + 80
Now that we have an expression for the combined speed, let's see the rest of the data:
Distance: d = 1380 mile
Time: t = 1.5 h
We also know that the formula to get speed is:
V = d/t
We have the combined speed, so, let replace it in the above formula to solve for X:
2X + 80 = 1380/1.5
2X + 80 = 920
2X = 920 - 80
2X = 840
X = 840/2
X = V1 = 420 mph
We have V1, so to get V2:
V2 = 420 + 80 = 500 mph
Answer:
Comparison shopping
Step-by-step explanation:
Due to the the difference in prices of high value goods from retailers, consumers usually find it difficult making a decision on the goods to buy. Thus, they do what we call comparison shopping whereby they attempt to compare prices and features of many similar products from different retailers before before they take a decision on what product to buy.
Answer:
The slope-intercept form is y=mx+b y = m x + b , where m m is the slope and b b is the y-intercept. Combine 13 1 3 and x x . Rewrite in slope-intercept form. Use the slope-intercept form to find the slope and y-intercept.) hope this helps
Step-by-step explanation:
Step-by-step explanation:
-22/5 +4/5
The lcm of the denominators is 5
If you divide through u have - 22+4=-18
-15=-15
Since both sides equal, they are infinitely many solutions
D) infinitely many solutions
