Answer:

Step-by-step explanation:
Given expression is 
Let us perform the operations inside the parentheses first.






Answer:
17/5
Step-by-step explanation:
If cosθ = 12/13, find (1+cotθ)
As shown in the diagram attached,
Cotθ = 1/tanθ = adjacent/opposite
From the diagram attached,
cotθ = 12/a................... Equation 1
But we can find the value of a by using pythagoras theorem
13² = 12²+a²
169 = 144+a²
a² = 169-144
a² = 25
a = √25
a = 5.
Substitute the value of a into equation 1
Therefore,
cotθ = 12/5
(1+cotθ) =(12/5)+1 = (5+12)/5
(1+cotθ) = 17/5
Answer:
B. 1. x^6
2. -6a^7
3. r^11
4. x^6
5.a^3b^6
6.x^14
7. 12y^8
8. 55x^4y^6
9. 30m^4n^4
10. 6a^10b^6c^16
C. 1. 40m+60n-810
2. 12am^2 - 8an- 16al^3+4ap
3. 2xmn-3ymn-4zmn
4. 20bx^2-8bx+20b
5. -28xa+4xb-14x
6. y^2 - 4
7. 4x^2 - 16
8. 16b^2 - 4
9. 25a^2-49
10. 9m^2-49
Answer:
<u>1/7=3/21</u>
<u>7/1=21/3</u>
the other fractions are not correct/valid therefore the fractions above are the correct answers
Step-by-step explanation:
Let me know if you need any other help:)