The point 6 cm away from the center travels in a circle of circumference 2π*(6 cm) = 12π cm, so that it covers this distance per revolution, 12π cm/1 rev.
So the disk has a linear speed of
(6000 rev/min) * (12π cm/rev) = 72,000π cm/min
which is equivalent to
(72,000π cm/min) * (1/100,000 km/cm) * (60 min/h)
or approximately 135.7 km/h.
Answer: Two and ninety-six hundredths in decimal form would be 2.96!
Step-by-step explanation:
The percentage of the number 84 which equals 9 is 75/7 percent.
Given the parameter:
"9 is what percent of 84"
To find what percent of 84 is 9, you can use the following formula:
Percent = (Part / Whole) × 100
Where:
Part = 9 (the smaller value you want to find the percentage of)
Whole = 84 (the larger value)
Now, plug in the values:
Percent = (9 / 84) × 100%
Simplifying we get:
Percent = (9 / 21) × 25%
Percent = (75/7)%
Therefore, 9 is 75/7 percent of 84.
Learn more about Percentages here: brainly.com/question/24159063
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x + y = 4
x − y = 6
Answer:
x=5 , y= -1
Step-by-step explanation:
You can see that one of the y's is negative while the other is positive, so you can add them together.
Now, negative 1 + positive 1 = 0, so the y's cancel out leaving only the x's.
Remember you can't add one part without adding the other so x+x = 2x, and 4+6=10. This makes the final equation 2x=10.
You can simplify that into x=5. This gives you the answer for x
Then substitute x=5 into any of the two equations (doesn't matter) I'll use the first one. So if you substitute it you get 5+y=4.
Simplified, y= -1
Therefore, x= 5 and y=-1
Answer:
(5,-1)
Step-by-step explanation:
Got it right on edge cause of the guy above me