Answer:
Step-by-step explanation:
9. Yes
10. No
11. No
12. Yes
13. Yes
14. No
Answer:
1.6 cups
Step-by-step explanation:
Each batch needs 0.4 cups of sugar, and she is making 4 batches. Therefore, we can multiply 0.4 times 4 to find how much sugar is needed.
0.4*4=1.6
So, she needs 1.6 cups of sugar for 4 batches
Answer:
about 11.99 inches
Step-by-step explanation:
Using the formula for the volume of a right circular cylinder:


Answer:
Look at attached screenshot!
Step-by-step explanation:
Really hard to firgure out how to do this so please rate for more!
Answer:
9/2 [ cos(15x) + cos(3x) ]
Step-by-step explanation:
9cos(6x) . cos(9x) can be expressed as
= 9/2 * 2cos (6x) * cos(9x) next here we will apply the rule
2cosA . cosB = cos(A+B) + cos( A-B)
where A = 6x , B = 9x
hence : 9cos(6x) . cos(9x) expressed as a sum will be
= 9/2 * [cos( 6x+ 9x) + cos( 6x - 9x ) ]
= 9/2 [ cos (15x ) + cos(-3x) ]
the final sum = 9/2 [ cos(15x) + cos(3x) ]