Answer:
Step-by-step explanation:
b in (-oo:+oo)
5*b+6 = -24 // + 24
5*b+6+24 = 0
5*b+30 = 0 // - 30
5*b = -30 // : 5
b = -30/5
b = -6
b = -6
So 4/5 should be an 80 because if you multiply 5x20 and 4x20 you would get 80/100 but sometimes teachers make certain questions worth more points than others so maybe that is what happened but maybe talk to your teacher about it
Answer:
It's not possible.
Step-by-step explanation:
The center of the star shape is like a circle. And the measure of a circle is 360 degrees. But because the measure of the rhombus's angle is 50 degrees, it is not possible. 50 x 8 = 400
Using the y=mx+b equation (i forget what it’s exactly called) the equation will be y=-1x-1
Answer:
The fourth term of the expansion is -220 * x^9 * y^3
Step-by-step explanation:
Question:
Find the fourth term in (x-y)^12
Solution:
Notation: "n choose k", or combination of k objects from n objects,
C(n,k) = n! / ( k! (n-k)! )
For example, C(12,4) = 12! / (4! 8!) = 495
Using the binomial expansion formula
(a+b)^n
= C(n,0)a^n + C(n,1)a^(n-1)b + C(n,2)a^(n-2)b^2 + C(n,3)a^(n-3)b^3 + C(n,4)a^(n-4)b^4 +....+C(n,n)b^n
For (x-y)^12, n=12, k=3, a=x, b=-y, and the fourth term is
C(n,3)a^(n-3)b^3
=C(12,3) * x^(12-3) * (-y)^(3)
= 220*x^9*(-y)^3
= -220 * x^9 * y^3