
Step-by-step explanation:
1) Expand by distributing terms.

2) Collect like terms.

3) Simplify.

4) Regroup terms.

Therefor the answer for this equation will be, 5x - 3.
Step-by-step explanation:
The answer will be zero
here are the steps:
cos(90-10)xcos(90-80)-sin(90-10)xsin(90-10)=
(cos10xcos10)-(sin80xsin80)=
0.965111-0.965111=0
have a good day :)
I hope it will benefit you.
Answer: 
Step-by-step explanation:
To solve for x, you need to get x alone. In this problem, k is a constant.


C is 666666688888 from my lookings. Jk
Answer:
£3.25
Step-by-step explanation:
You would add £1.25 and £00.50 which is £1.75 then you would do £5.00-£1.75 which is £3.25