Answer:
56
Step-by-step explanation:
First, I drew picture of a line containing points W and Z.
Next, I added a midpoint between W and Z and labelled it Y.
Next, I added a midpoint between W and Y and labelled it X.
It is given that XY = 14, so that means WX is also 14 (because X is the midpoint, these two distances have to the be the same)
Now I know WY is 28, which means YZ is also 28.
So WZ has to be 56.
Answer:
Descarte's rule says that the polynomial will have the number of zeroes equal to the number of times the sign off the coefficient changes.
For positive real roots:
The coefficient of polynomial is:
+9 -4 +10
There is 2 time sign in changing in 1st and 2nd term and then in 2nd and 3rd term.
So,there will be 2 positive real roots or less but even.
For negative real roots find P(-x)
So, coefficient of above polynomial is:
-9 +4 -10
There is 2 time sign in changing in 1st and 2nd term and then in 2nd and 3rd term.
So,there will be 2 negative real roots or less but even.
Given a group of
n object. We want to make a selection of
k objects out of the n object. This can be done in
C(n, k) many ways, where
,
where k!=1*2*3*...(k-1)*k
Thus, we can do the selection of 3 cd's out of 5, in C(5,3) many ways,
where
Answer: 10
-4(2+4x)-2=-10-8x
-8-16X-2=-10-8X
+8X on both sides
-8-8X=-10
+8 on both sides
-8X=-2
divide by -8 on both sides
X=.25 is your answer