Answer:
see explanation
Step-by-step explanation:
Using the trigonometric identity
sin²x + cos²x = 1 ⇒ sin²x = 1 - cos²x
Given
sin²x + 7cosx + 17
=1 - cos²x + 7cosx + 17
= - cos²x + 7cosx + 18 ← factor out - 1 from each term
= - (cos²x - 7cosx - 18)
Consider the factors of the constant term (- 18) which sum to give the coefficient of the cosx term (- 7)
The factors are - 9 and + 2, thus
= - (cosx - 9)(cosx + 2) ← in factored form
Answer:
h=13
Step-by-step explanation:
volume=w*h*l
312=(4)(6)(X)
Hope you can see the picture please let me know if you can Have a great day
Answer:

Step-by-step explanation:
Given
--- households
--- gallons
Required
The number of households
To do this, we simply multiply the average households by the gallons.



Rewrite as:


Answer:
100000000
Step-by-step explanation:
Basic way to do this when using 10's 100's 1000's and up, count the number of zeros on the end and multiple the first regular number then add the zeros back :D