The circumference of a circle with a radius of 12 cm is 75.45 cm
<h3>What is an
equation?</h3>
An equation is an expression that shows the relationship between two or more numbers and variables.
The circumference of a circle is given by:
Circumference = 2π * radius
Hence:
Circumference = 2(22/7)(12) = 75.45 cm
The circumference of a circle with a radius of 12 cm is 75.45 cm
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The correct answer would be (4,-5)
For question number 1:The plot H = H(t) is the parabola and it reaches its maximum in the moment when exactly at midpoint between the roots t = 0 and t = 23. At that moment t = 23/2 or 11.5 seconds.
For question number 2:To find the maximal height, just simply substitute t = 11.5 into the quadratic equation. The answer would be 22.9.
For question number 3:H(t) = 0, or, which is the same as -16t^2 + 368t = 0.Factor the left side to get -16*t*(t - 23) = 0.t = 0, relates to the very start of the process, when the ash started its way up.The other root is t = 23 seconds, and it is precisely the time moment when the bit of ash will go back to the ground.
Answer:
X=27
Step-by-step explanation:
so x=27