Hello There!
<u><em>The volume of a cylinder is pi * r^2 * h. It's a circle times the height. </em></u>
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<u><em>The volume of a cone is (1/3) * pi * r^2 * h. So it is one third of the volume of a cylinder with the same dimensions. </em></u>
"the candle is 17 inches tall after 3 hours" then it says " after 5 hours it is 15 inches tall"
-assuming that they mean that after 2 additional hours (from 3-5), the candle is now 2 inches shorter than before, a unit of decreasing value can be determined in this case the candle is "shortening" at a rate of 1 inch/per hour. If we write this in equation form it looks like this I think: h = h-t ...... right ? so then: h = 20 - 8 , h = 12 inches after 8 hours.
20 inches is the original height of the candle before any was burnt that I calculated using the same equation - What do you think of my answer.
Answer:
top right
Step-by-step explanation:
it cannot be the bottom ones and the top left one is showing 2x-1 which is not either of the equations
Answer:
Therefore the two values required are 2.08 and -11.08.
Step-by-step explanation:
i) f(x) = + 10x - 12 is a quadratic equation and a quadratic equation will have two roots whose values when substituted in to the given quadratic equation will give the value.
ii) The question is therefore essentially asking us to find the roots of the given quadratic equation.
This can be done by equating the given quadratic equation to zero and then solving the equation for its roots.
∴ + 10x -12 = 0 ⇒ x = (-10 ± ) ÷ 2
= (-10 ± 12.166)÷2 = 2.08, -11.08
Therefore the two values required are 2.08 and -11.08
X is always going to go first so it goes like this (x,y) so it would be (2,5) hope this helps u some