Answer:
a=3 and b=-2
Step-by-step explanation:
We are given that five terms of a quadratic sequence are
1 8, 21, 40, 65.
The nth term of this sequence
=
We have to find the value of a and b where a and b are integers.
For n=1
......(1)
For n=2

.....(2)
Subtract equation (1) from (2) we get


Using the value of a=3 in equation (1)


Hence, the value of
a=3 and b=-2
2+2-1=3
2+2=4
And 4 minus 1 equals 3
<span>The difference between two integers is at most 16
x1 - big integer
x2- small integer

</span><span>the smaller integer is 12
so
x2 = 12
substitution
</span>
<span>

solve for x1
however, note the fact larger
thus meaning
x1 > x2 applies to this problem
</span>
Answer:
84 degrees
Step-by-step explanation:
Applying the Cosine Rule (Choice 2 is the correct one) :-
12^2 = 11^2 + 6^2 - 2*11*6 cos Y
144 = 121 + 36 - 132 cos Y
cos Y = (121 + 36 - 144) / 132
cos Y = 0.09848
Y = 84.3 degrees
Answer:
literally google graphing calculator and type 3x