That is the Pythagorean’s theorem, used to find the largest side on a right (90 degree) triangle.
Let y be the temperature
Let m be the rate of temperature drop in degrees per hour
Let x be the number of hours elapsed since 8PM
The initial temperature (at x = 0) is 0
y = mx
Four hours from 8 PM, the temperature was -16.8 degrees
-16.8 = m(4)
m = -4.2 degrees per hour
At 9PM, one hour will have elapsed.
y = -4.2(1)
y = -4.2 degrees
Answer:
<h2>The answer is option A</h2>
Step-by-step explanation:
To find the value of x when y = 24, we must first find the relationship between them
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where k is the constant of proportionality
when
x = 16
y = 2
Substitute the values into the above formula and solve for k
That's
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Cross multiply we have the answer as
k = 8
So the formula for the variation is
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Now when y = 24
We have
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Square both sides
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We have the final answer as
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Hope this helps you
Answer:
I dont know
Step-by-step explanation:
No. Any whole number multiplied by an even number is even.