How do I solve 15+12=_+7
2 answers:
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Answer:
The linear velocity in miles per our is 14789400 mph .
Step-by-step explanation:
Given as :
The radius of wheel = 50 inches
So, the diameter of wheel = 2 × radius = 2×50 = 100 inches
Or, Diameter = 100 × 1.57 miles = 157 miles
The number of revolution per minutes = 500 RPM
or, The number of revolution per hours = 500 × 60 = 30,000 RPH
Now, Circumference of wheel = ×diameter
Or, C = 3.14 × 157 = 492.98 miles
So, Distance cover by wheel = C × RPH × Time in hour
or, D = 492.98 × 30,000 × Time in hour
And Velocity =
or, V =
or, V = 14789400 miles per hour
Hence The linear velocity in miles per our is 14789400 mph . Answer
Answer:
The coordinates of point R are (6 , 3)
Step-by-step explanation:
* Lets revise the rule of the mid-point
- The mid point (x , y)of a line whose end points are
and is
∵ M is the mid point of line RS
∵ The coordinates of point M are (7 , 5)
∴ x = 7 and y = 5
∵ The coordinates of point R are
∵ The coordinates of point S are (8 , 7)
∴ = (8 , 7)
∴ and
- By using the rule above
∵
∵
- Multiply both sides by 2
∴
- Subtract both sides by 8
∴
∴ the x-coordinate of point R is 6
∵
∵
- Multiply both sides by 2
∴
- Subtract both sides by 7
∴
∴ the y-coordinate of point R is 3
* The coordinates of point R are (6 , 3)