Answer:
15 Hours
Step-by-step explanation:
It takes 1.5 hours to build 1 birdhouse, so multiply 1.5×10 and you get 15 hours.
1+tan^2(A) = sec^2(A) [Pythagorean Identities]
tan^2(A)cot(A) = tan(A)[tan(A)cot(A)] = tan(A)[1] = tan(A)
*see photo for complete solution*
You question implies simple subtraction is needed:
28-8=20
No, she will still owe $9.30. $25.63 - $16.33= $9.30
Answer:

Step-by-step explanation:

Hope this helps ;) ❤❤❤