Answer:
If the roots of any equation are equal then it means that their Discriminant = 0
So, b²-4ac = 0
We have given the equation 2x² + kx + 2, where,
a = 2
b = k (we have to find the value)
c = 2
Then, b²-4ac=0
b² - 4(2)(2) = 0
b² - 16 = 0
b² = 16
√16 = 4
Hence the vue of k is 4.
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Step-by-step explanation:
hope it helps you ( ◠‿◠ )
The answer is 23. you take .4 and times it by the first number, then times it by that number until you have 10 numbers. then add all of those numbers up
the answer is 382.41666 hope this helped
First, we need to find the radius from the circle with the area 100pi.
The formula for area of a circle is pi*r^2
pi*r^2= 100pi
We can eliminate the both pi since they are on both sides of the equation. This means r^2=100, and r= the square root of 100, which is 10.
Now we know the radius is 10, we can plug it into the equation for arc sector area- (n is the central angle, replace n with the central angle)
n/360 * 2*pi*r
n/360 * 2*pi*10
n/360 * 20pi
Hope this helps a bit
