Answer:
1320 times
Step-by-step explanation:
Time = 1 h × (60 min/1 h) = 60 min
Revolutions = 60 min × (22 rev/1 min) = 1320 rev
The blades revolve 1320 times per hour.
Answer:
r equals StartFraction C Over 2 pi EndFraction
Step-by-step explanation:
we know that
The circumference of a circle is equal to

where
r is the radius of the circle
Solve for r
That means -----> isolate the variable r
Divide by 2π both sides

Simplify right side

Rewrite

so
r equals StartFraction C Over 2 pi EndFraction
Because it’s important to know the equation so that would be easy to know the quadratic formula and easy to solve the problem
Answer:
(x,y)=(3/2,7/5)
Step-by-step explanation:
The function that best represents the data is y = 0.75x + 4.5. The slope in this case represents the increase in the amount she spends in $ due to the number of cards she makes. The intercept with the Y axis (4.5) means that she has an expense of 4.5 $ without having made any card yet.