90+31= 121
3x-1+121=120
3x+120=180
-120
3x=60
Divide by 3 on both sides
X=20
Answer:
The sixth term of the binomial expansion is;
10C5 (5y)^5 (3)^5
Step-by-step explanation:
Here, we want to select which of the options represent the 6th term of the binomial expansion;
(5y + 3)^10
We should know that while the powers of 5y will be increasing, the powers of 3 will be decreasing.
We can write the terms as follows;
10C0(5y)^10(3)^0 + 10C1(5y)^9(3)^1 + 10C2(5y)^
8(3)^2 + 10C3(5y)^7(3)^3 + 10C4(5y)^6(3)^4 + 10C5(5y)^5(3)^5 + ............
Answer
2/3, 7/10, 11/15
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given
Required
Determine the probability of drawing red and green without replacement
This is calculated as follows:
We used Total - 1 because it's a probability without replacement:
<em>Hence, the required probability is 1/11</em>
Answer:
D
Step-by-step explanation:
They are corresponding angles hence making them the same. Sorry if I'm wrong.
