Answer:
The equation is:

And the solution is:

Step-by-step explanation:
Given
Represent Kiran with K and Tyler with T
Kiran score is represented as:

Also, Kiran scored 223 less than Tyler.
This is represented as:

Substitute 409 for K

Make T the subject


Answer:
Step-by-step explanation:
15. 
16. 

=> The clause is correct
17. Do the same (16)
18. 
19.

=> The clause is correct
20. Do the same (18)
21. Left = 
Right = 
Same with (16) => Left = Right => The clause is correct
22. Do the same (21)
Too long, i'm so lazy :))))
Answer:
B- It cannot be answered without additional information.
Step-by-step explanation:
From the question, we have α= 0.01 and α= 0.05.
Thus;
We can decide to look at the critical values and check if test statistic is less or more than the tabulated value for α= 0.01 and 0.05.
However, that will not be sufficient as neither the level of significance nor confidence level is clearly mentioned in the question and thus, we can not answer it without additional information.
1/3(a + b) = 60
a + b = 60 * 3 = 180
1/4(a - b) = 28
a - b = 28 * 4 = 112
a + b = 180
a - b = 112
---------------add
2a = 292
a = 292/2
a = 146
a + b = 180
146 + b = 180
b = 180 - 146
b = 34
so ur 2 angles are : 146 and 34
It is an acute triangle bc 8 squared + 14 squared is 260 and that is more than 15 squared (225)