Answer:
A
Step-by-step explanation:
6/x* 5/(2x+1) = 30/ 2x^2+x
This question is incomplete
Complete Question
A drawing of a basement uses the same scale as the example above which is 1 inch to 10 ft. The basement is 28ft wide and 35 ft long. how wide and long is the drawing? show your work
Answer:
2.8 inches wide and 3.5 inches long.
Step-by-step explanation:
Scale drawing
1 inch = 10 feet
= 1 inch/10 feet
For the Width of the basement
The basement = 28ft wide
= 1inch/ 10 feet = x inch/28ft
= Cross Multiply =
10 feet × x inch = 28feet × 1 inch
x inch = 28 feet × 1 inch/10 feet
x = 2.8 inches
The drawing = 2.8 inches wide
The length of the basement = ft long
1inch/ 10 feet = x inch/35ft
= Cross Multiply =
10 feet × x inch = 35feet × 1 inch
x inch = 35 feet × 1 inch/10 feet
x = 3.5inches
Therefore, the drawing is 2.8 inches wide and 3.5 inches long
The first thing we must do in this case is to define variables.
We have then:
x: speed of the giraffe
x + 5: speed of the ostrich
By definition we have:
d = v · t
d / v = t
Where,
d: distance
v: speed
t: time
Since the time is the same then we have:
5 / (x + 5) = 4 / x
5x = 4 (x + 5)
Clearing x we have:
5x-4x = 20
x = 20 mph (speed of the giraffe)
x + 5 = 20 + 5 = 25 mph (speed of the ostrich)
Answer:
20 mph (speed of the giraffe)
25 mph (speed of the ostrich)
Answer: I can answer the first question ( In technical terms, the slope of the line is the change in y over the change in x
Step-by-step explanation: