Use Power of a point.
(can prove using similarity of the triangle)
AC*CB = DC*CE
8*7 = 4*CE
CE = 14
DE = DC+CE = 4+14 = 18
Ans: 18
Answer:
It's odd.
Explanation:
A function is odd when <span><span>f<span>(−x)</span></span>=−<span>f<span>(x)</span></span></span>
<span><span>f<span>(−x)</span></span>=6<span><span>(−x)</span>3</span>−2<span>(−x)</span></span>
<span>=−6<span>x3</span>+2x</span>
<span>=−<span>(6<span>x3</span>−2x)</span></span>
<span>=−<span>f<span>(x)</span></span></span>
Thus, the function is odd.
If a function is odd, then it is symmetric over the x-axis.
Answer:
This question makes no sense
Step-by-step explanation:
Answer:
C 60π cm³
Step-by-step explanation:
1/3 x π x6² x 5
=60π
The variance is the total of the squared distances of the given data from the mean.
This can be calculated through the equation,
σ² = summation of X² / N - μ²
where σ² is the variance X's are the data, N is the number of terms, and μ is the mean.
summation of X² = 100² + 100² + 120² + 120² + 180² = 81200
N = 5
μ = (100 + 100 + 120 + 120 + 180) / 5
μ = 124
Substituting these values to the equation for variance,
σ² = (81200/5) - 124² = 864
Thus, the variance is equal to 864.
